# use keyword UNION as a namespace prefix PREFIX UNION: SELECT * WHERE { ?x UNION:foo ?z }
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PREFIX : SELECT * WHERE { ( ) :p 1 }
BASE PREFIX : SELECT * WHERE { :x :p '''Long''\\Literal with '\\ single quotes ''' }
DESCRIBE
BASE PREFIX : SELECT * WHERE { :x :p "x\"y'z" }
PREFIX q: SELECT * WHERE { FILTER (q:name( )) }
BASE PREFIX : SELECT * WHERE { :x :p '''Long ' Literal''' }
PREFIX rdf: CONSTRUCT { [] rdf:subject ?s ; rdf:predicate ?p ; rdf:object ?o } WHERE {?s ?p ?o}
PREFIX : SELECT * { { ?s ?p ?o } UNION { ?a ?b ?c } UNION { ?r ?s ?t } }
SELECT * WHERE { ?s ?p ?o . FILTER (?o) }