These tests use two documents. One is named importsNNN.rdf, the other is named
mainNNN.rdf. These tests indicate the interaction between owl:imports and
the sublanguage levels of the main document.
This is a negative test. The input document contains some use of the OWL namespace
which is not a feature of OWL. These typically show DAML+OIL features that
are not being carried forward into OWL.