Today W3C announces a new version of a standard for representing
knowledge on the Web. OWL 2, part of W3C's Semantic Web toolkit,
allows people to capture their knowledge about a particular domain
(say, energy or medicine) and then use tools to manage information,
search through it, and learn more from it. As an open standard based
on Web technology, OWL 2 lowers the cost of merging knowledge from
multiple domains. More than a dozen implementations of OWL 2 are
already available. The standard consists of 13 documents, of which 4
are instructional.