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https://github.com/cookiengineer/audacity
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10 lines
229 B
SPARQL
10 lines
229 B
SPARQL
PREFIX dc: <http://purl.org/dc/elements/1.1/>
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PREFIX x: <http://example.org/ns#>
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SELECT ?title ?price
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WHERE
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{ ?book dc:title ?title .
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OPTIONAL
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{ ?book x:price ?price } .
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FILTER (?price < 15) .
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}
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