rdf11:rdf_retractall/4

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Predicate rdf_retractall/4

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rdf_retractall(?S, ?P, ?O) is nondet
rdf_retractall(?S, ?P, ?O, ?G) is nondet: Remove all matching triples from the database. Matching is performed using the same rules as rdf/3. The call does not instantiate any of its arguments.