assertFalse(this.modelset.containsStatements(a, Variable.ANY, RDF.predicate, predicate));
assertFalse(this.modelset.containsStatements(a, Variable.ANY, RDF.object, object));
assertFalse(this.modelset.containsStatements(a, Variable.ANY, RDF.type, RDF.Statement));
Statement stmt = this.modelset.createStatement(a, subject, predicate, object);
BlankNode blankNode = this.modelset.addReificationOf(stmt);
assertTrue(this.modelset.containsStatements(a, blankNode, RDF.subject, subject));
assertTrue(this.modelset.containsStatements(a, blankNode, RDF.predicate, predicate));
assertTrue(this.modelset.containsStatements(a, blankNode, RDF.object, object));
assertTrue(this.modelset.containsStatements(a, blankNode, RDF.type, RDF.Statement));