return readWriteGraph.findUnsorted(subject, predicate, object);
}
@Override
public String toString() {
RdfWriter writer = new MemRdfXmlWriter();
StringWriter sw = new StringWriter();
try {
writer.write(this, sw);
} catch (Exception e) {
throw new RuntimeException("Unable to get String representation of graph", e);
}
return sw.toString();
}