A test-suite and driver program are provided by rdf_test.pl 
in the source directory. To run these tests, load this file into Prolog 
in the distribution directory. The test files are in the directory
suite and the proper output in suite/ok. 
Predicates provided by rdf_test.pl:
suite/tN.rdf and 
display the RDF source, the intermediate Prolog representation and the 
resulting triples.suite/tN.rdf and store the resulting triples in
suite/ok/tN.pl for later validation by test/0.