This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori 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.