TopBraid Composer can lift models from other formats into OWL/RDFS. The system provides a wizard to automatically import relational databases so that they can be treated as virtual RDF graphs. UML files created with tools like IBM Rational can be converted on a class-by-class basis. XML Schema files can be converted into OWL Schema, preserving namespace imports. Spreadsheets can be converted into classes and instances, and built-in refactorings can be used to further process the output from a single class into into multiple classes.