This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
So, you cannot look into it, as a subset or something.
SWS - is a conecpt under Semantic Web, of having semantics for describing services. While, the Semantic Annotations for WSDL and XML Schema (SAWSDL) is a W3C Recommendation which defines mechanisms using which semantic annotations can be added to WSDL components.