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Availability::- use_module(library(semweb/rdf11)).
Source[semidet]rdf_is_literal(@Term)
True if Term is an RDF literal term.

An RDF literal term is of the form String@LanguageTag or Value^^Datatype.

Success of this goal does not imply that the literal is well-formed or that it is present in the database (see rdf_literal/1 for that).

Availability::- use_module(library(semweb/rdf_db)).
Source[semidet]rdf_is_literal(@Term)
True if Term is an RDF literal object. Currently only checks for groundness and the literal functor.