*Semantic Web
*RSS

*http://ja.wikipedia.org/wiki/Resource_Description_Framework
*[RDF -- リソース表現のフレームワーク|http://www.kanzaki.com/docs/sw/rdf-model.html]
*[メタ情報とセマンティック・ウェブ|http://www.kanzaki.com/docs/sw/]

!!!Query Language

*[SPARQL Query Language for RDF|http://www.w3.org/TR/rdf-sparql-query/]
*[RDF Query and Rules Framework|http://www.w3.org/2001/11/13-RDF-Query-Rules/terms]

*[RDF Query by example|http://ilrt.org/discovery/2002/04/query/]

*http://kasei.us/code/rdf-query/
**RDF::Query is an implementation of the SPARQL and RDQL query languages for Perl.