How to create a basic semantic search in python

I want to write a basic semantic web crawler using Python, I know that semantic 开发者_JAVA技巧apps use RDF files, but what else? I have some Python RDF modules installed and I started learning how they work.

Could you introduce me to the technologies and techniques used in a semantic application?

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The next things you might want to learn are:

• embedding samantic data in HTML - RDFa, microformats, microdata. Some stats: microformats and RDFa deployment across the Web via DAM.co.uk:

  

• querying RDF data - SPARQL
• most popular ontologies currently in use
• list of available SPARQL endpoints

You can find some examples of SPARQL queries here. Another notable Q&A resource is semanticweb.com.