Transforming the iCalendar spec to an RDF/OWL ontology

This transformation extracts an RDF/XML schema/ontology from an XHTML representation of RFC 2445, iCalendar.

It's intended for use with GRDDL (see also: demo.)

@@TODO: check the output for OWL-DL-happiness, ala Danny A 5Feb. capture cardinality constraints; write test cases that fail them; get pellet and/or surnia to find the problem.