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annotate sparql/sparql/test/dawg/data-r2/algebra/join-combo-1.rq @ 0:7785ad38967f default tip

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author atsuko
date Thu, 25 Aug 2011 22:14:55 -0400
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1 PREFIX : <http://example/>
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2
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3 SELECT ?a ?y ?d ?z
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4 {
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5 ?a :p ?c OPTIONAL { ?a :r ?d }.
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6 ?a ?p 1 { ?p a ?y } UNION { ?a ?z ?p }
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7 }