"symbol">None</span></span>)</span><span class="result">: <span class="extype" name="scala.Boolean">Boolean</span></span>
      </span>
      
      <p class="shortcomment cmt">Determine whether this RDF graph contains any triples
with a given (subject, predicate, object) pattern.</p><div class="fullcomment"><div class="comment cmt"><p>Determine whether this RDF graph contains any triples
with a given (subject, predicate, object) pattern.
</p></div><dl class="paramcmts block"><dt class="param">triples</dt><