RDF.Statement.valid-question-mark
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valid-question-mark
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Specs
valid?(RDF.Triple.t() | RDF.Quad.t() | any()) :: boolean()
Checks if the given tuple is a valid RDF statement, i.e. RDF triple or quad.
The elements of a valid RDF statement must be RDF terms. On the subject position only IRIs and blank nodes allowed, while on the predicate and graph context position only IRIs allowed. The object position can be any RDF term.