@prefix dc: .
@prefix stock: .
@prefix inv: .
stock:book1 dc:title "SPARQL Query Language Tutorial" .
stock:book1 inv:price 10 .
stock:book1 inv:quantity 3 .
stock:book2 dc:title "SPARQL Query Language (2nd ed)" .
stock:book2 inv:price 20 .
stock:book2 inv:quantity 5 .
stock:book3 dc:title "Moving from SQL to SPARQL" .
stock:book3 inv:price 5 .
stock:book3 inv:quantity 0 .
stock:book4 dc:title "Applying XQuery" .
stock:book4 inv:price 20 .
stock:book4 inv:quantity 8 .