-- LOG_ENABLE(2,1) ;
    -- Clear Introspection Graph associated with these views
    SPARQL CLEAR GRAPH <urn:graphql:intro:schemaorg:products> ;  
    -- SPARQL SELECT COUNT(*) FROM <https://dbpedia.org/resource/Twenty_Thousand_Leagues_Under_the_Seas#graph> WHERE {?s ?p ?o} ;
    SPARQL SELECT COUNT(*) FROM <urn:graphql:intro:schemaorg:products> WHERE {?s ?p ?o} ;
    -- ABox Data
    SPARQL CLEAR GRAPH <urn:schemaorg:products:abox> ;  
    -- SPARQL SELECT COUNT(*) FROM <https://dbpedia.org/resource/Twenty_Thousand_Leagues_Under_the_Seas#graph> WHERE {?s ?p ?o} ;
    SPARQL SELECT COUNT(*) FROM <urn:schemaorg:products:abox> WHERE {?s ?p ?o} ;

    -- Load Data
    -- iPhone Products and Offers From OSDS Uploads (via SPARQL Upload Feature)

    SPARQL ADD <https://www.apple.com/iphone-12-pro/key-features/#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.att.com/buy/phones/apple-iphone-13-128gb-pink.html#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.verizon.com/products/otterbox-otter-pop-symmetry-series-case-iphone-12-mini-stardust/#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.virginmedia.com/mobile/pay-monthly/apple/iphone-12-pro> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/shop/buy-iphone/iphone-11/6.1-inch-display-128gb-black-unlocked> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/us-hed/shop/buy-iphone/iphone-12-pro#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/shop/buy-iphone/iphone-13/6.1-inch-display-256gb-starlight-verizon#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/shop/questions/iphone#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.t-mobile.com/cell-phone/apple-iphone-13?sku=194252705452#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.t-mobile.com/cell-phone/apple-iphone-13-pro-max?sku=194252697474#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/iphone-14-pro/#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/shop/buy-iphone/iphone-14-pro#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/apple-watch-ultra/#osds> TO <urn:schemaorg:products:abox> ;
    SPARQL ADD <https://www.apple.com/shop/buy-watch/apple-watch-ultra#osds> TO <urn:schemaorg:products:abox> ;

        -- Sponged Data with cache-invalidation enabled via pragmas
        -- iPhone Products and Offers From OSDS Uploads (via SPARQL Upload Feature)

    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/iphone-12-pro/key-features/#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.att.com/buy/phones/apple-iphone-13-128gb-pink.html#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.verizon.com/products/otterbox-otter-pop-symmetry-series-case-iphone-12-mini-stardust/#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.virginmedia.com/mobile/pay-monthly/apple/iphone-12-pro> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/shop/buy-iphone/iphone-11/6.1-inch-display-128gb-black-unlocked> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/us-hed/shop/buy-iphone/iphone-12-pro#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/shop/buy-iphone/iphone-13/6.1-inch-display-256gb-starlight-verizon#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/shop/questions/iphone#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.t-mobile.com/cell-phone/apple-iphone-13?sku=194252705452#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.t-mobile.com/cell-phone/apple-iphone-13-pro-max?sku=194252697474#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/iphone-14-pro/#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/shop/buy-iphone/iphone-14-pro#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/apple-watch-ultra/#osds> INTO <urn:schemaorg:products:abox> ;
    SPARQL DEFINE get:soft "soft" LOAD <https://www.apple.com/shop/buy-watch/apple-watch-ultra#osds> INTO <urn:schemaorg:products:abox> ;

    -- Other Products & Offers
    SPARQL
    INSERT {
                GRAPH <urn:schemaorg:products:abox> 
                    { 
                        ?s a schema:Product . 
                        ?s schema:name ?name .
                        ?s schema:image ?image .
                        ?s schema:offers ?offer .
                        ?s schema:sku ?sku .
                        ?s schema:description ?description .
                        ?s schema:brand ?brand .
                        ?s schema:price ?price . 
                        ?s schema:maintEntityOfPage ?page . 
                        ?s schema:url ?url . 
                    }
        }
    WHERE {
            {
                SELECT * 
                WHERE {
                        GRAPH ?g 
                                { 
                                    ?s a schema:Product . 
                                    ?s schema:name ?name .
                                    OPTIONAL { ?s schema:mainEntityOfPage ?pageURL } .
                                    BIND (?pageURL AS ?page ) .
                                    OPTIONAL { ?s schema:url ?webPageURL } .
                                    BIND (?webPageURL AS ?url ) .
                                    OPTIONAL { ?s schema:image ?imageURL } .
                                    BIND (?imageURL AS ?image ) .
                                    OPTIONAL { ?s schema:offers ?offer } .
                                    OPTIONAL { ?s schema:sku ?sku } .
                                    ?s schema:description ?description .
                                    OPTIONAL { ?s schema:brand ?brand } .
                                    # FILTER (CONTAINS(STR(?name), 'iPhone'))
                                    # FILTER (LANG(?description) = "en")
                                    # FILTER (LANG(?name) = "en")
                                    OPTIONAL {?offer schema:name ?offerName .
                                    ?offer schema:price ?offerPrice .
                                    ?offer schema:sku  ?offerSku }. 
                                }
                }
            }
        } 

    LIMIT 1000 ;

    -- Check 
    -- SPARQL SELECT COUNT(*) FROM <https://dbpedia.org/resource/Twenty_Thousand_Leagues_Under_the_Seas#graph> WHERE {?s ?p ?o} ;
    SPARQL SELECT COUNT(*) FROM <urn:schemaorg:products:abox> WHERE {?s ?p ?o} ;

    -- Cleanup

    SPARQL CLEAR GRAPH <urn:graphql:schemaorg:bridge:products> ;
    SPARQL SELECT COUNT(*) FROM <urn:graphql:schemaorg:bridge:products> WHERE {?s ?p ?o} ;

    -- GraphQL Mapping Graph 
    SPARQL
    PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
    PREFIX owl: <http://www.w3.org/2002/07/owl#> 
    PREFIX dbo: <http://dbpedia.org/ontology/> 
    PREFIX dbp: <http://dbpedia.org/property/> 
    PREFIX	gql: <http://www.openlinksw.com/schemas/graphql#> 
    PREFIX dct: <http://purl.org/dc/terms/> 

    INSERT DATA INTO <urn:graphql:schemaorg:bridge:products>
    {
        #  Schema.Org to GraphQL Entity & Property Mappings  
        gql:Map gql:schemaObjects gql:Product, gql:Products, gql:Offer, gql:Offers ; # Target GraphQL Entity Types List
                gql:dataGraph <urn:schemaorg:products:abox> ; # DBpedia ABox Graph
                gql:schemaGraph <urn:graphql:schemaorg:bridge:products> . # This Schema and Mappings

        # Schema.org Product Class to GraphQL Entity Type Mappings #
        gql:Product gql:type gql:Object ;
            gql:rdfClass schema:Product .

        gql:Products gql:type gql:Array ;
            gql:rdfClass schema:Product .

        gql:Offer gql:type gql:Object ;
            gql:rdfClass schema:Offer .

        gql:Offers gql:type gql:Array ;
            gql:rdfClass schema:Offer .

        # GraphQL Entity Field (Property) to Schema.org Product Property Mappings #
        
        schema:offers a owl:ObjectProperty ;
            rdfs:range schema:Offer ;
            rdfs:domain schema:Product ;
            gql:type gql:Array ;
            gql:field gql:offers .

        schema:mainEntityOfPage a owl:ObjectProperty ;
            rdfs:range schema:URL ;
            rdfs:domain schema:Product ;
            gql:type gql:Array ;
            # gql:type gql:Scalar ;
            gql:field gql:mainEntityOfPage .

        schema:image a owl:DatatypeProperty ;
            rdfs:range schema:URL ;
            rdfs:domain schema:Product ;
            gql:type gql:Array ;
            # gql:type gql:Scalar ;
            gql:field gql:image .
        
        schema:url a owl:DatatypeProperty ;
            rdfs:range schema:URL ;
            rdfs:domain schema:Product ;
            gql:type gql:Array ;
            # gql:type gql:Scalar ;
            gql:field gql:url .

        schema:potentialAction a owl:DatatypeProperty ;
            rdfs:range schema:Action ;
            rdfs:domain schema:Product, schema:Offer ;
            gql:type gql:Array ;
            # gql:type gql:Scalar ;
            gql:field gql:potentialAction .

        schema:name a owl:DatatypeProperty ;
            rdfs:range xsd:string ;
            rdfs:domain schema:Product, schema:Offer ;
            gql:type gql:Scalar ;
            gql:field gql:name .

        schema:description a owl:DatatypeProperty ;
            rdfs:range xsd:string ;
            rdfs:domain schema:Product ;
            gql:type gql:Scalar ;
            gql:field gql:description .

        schema:sku a owl:DatatypeProperty ;
            rdfs:range xsd:string ;
            rdfs:domain schema:Product, schema:Offer ;
            gql:type gql:Scalar ;
            gql:field gql:sku .


        schema:brand a owl:DatatypeProperty ;
            rdfs:range xsd:string ;
            rdfs:domain schema:Product ;
            gql:type gql:Scalar ;
            gql:field gql:brand .

        schema:price a owl:DatatypeProperty ;
            rdfs:range xsd:decimal ;
            rdfs:domain schema:Product, schema:Offer ;
            gql:type gql:Scalar ;
            gql:field gql:price .

        schema:priceCurrency a owl:DatatypeProperty ;
            rdfs:range xsd:string ;
            rdfs:domain schema:Offer ;
            gql:type gql:Scalar ;
            gql:field gql:priceCurrency .

        schema:lowPrice a owl:DatatypeProperty ;
            rdfs:range xsd:decimal ;
            rdfs:domain schema:Offer ;
            gql:type gql:Scalar ;
            gql:field gql:lowPrice .

        schema:highPrice a owl:DatatypeProperty ;
            rdfs:range xsd:decimal ;
            rdfs:domain schema:Offer ;
            gql:type gql:Scalar ;
            gql:field gql:highPrice .
    } ;

    -- Update GQL Bridge Type Schema
    GQL_INIT_TYPE_SCHEMA(); -- Initialize GQL Type Schema for modification 
    GQL_INTRO_DEL ('urn:graphql:intro:schemaorg:products'); -- Delete Instrospection Data from the GQL Bridge Type System Schema
    TTLP (GQL_CREATE_TYPE_SCHEMA ('urn:graphql:schemaorg:bridge:products'), '', 'urn:graphql:intro:schemaorg:products'); -- Generate Introspection Data 
    GQL_INTRO_ADD ('urn:graphql:intro:schemaorg:products'); -- Add modified Instrospection Data to GQL Bridge Type System Schema