The Semantic Annotations for WSDL and XML Schema (SAWSDL) reached recommendation status on August 28 2007, turning it into a "W3C Standard".
Although Web Service and Semantic Web standards have been developed in parallel by the W3C, there hasn't been any relation between both groups for a long time. The basic idea behind the Semantic Web is a web of data:
The Semantic Web is about two things. It is about common formats for integration and combination of data drawn from diverse sources, where on the original Web mainly concentrated on the interchange of documents. It is also about language for recording how the data relates to real world objects. That allows a person, or a machine, to start off in one database, and then move through an unending set of databases which are connected not by wires but by being about the same thing.
