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Pack prolog_rdf -- prolog/rdf_export.pl
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RDF export predicates that are backend-independent.

 rdf_write_quad(+Out:ostream, +Quad:rdf_quad) is det
 rdf_write_quad(+Out:ostream, +Tuple:rdf_tuple, +GraphName:rdf_graph_name) is det
Quad must be a quadruple (denoted by compound term rdf/4). Triples (denoted by compound term rdf/3) are not supported.
 rdf_write_triple(+Out:ostream, +Tuple:rdf_tuple) is det
Accepts triples (tp/3) and quadrupleds (tp/4), but always writes a triple.
 rdf_write_tuple(+Out:ostream, +Tuple:rdf_tuple) is det
Writes a triple if Tuple is a triple pattern term (tp/3). Writes a quadruple if Tuple is a quadruple pattern term (tp/4).

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 rdf_write_quad(Arg1, Arg2, Arg3)