Semantic Search Engine with XML data as input

[dusk8er]

I want to design a semantic search engine which can give results from scraped XML files stored in local database.I have considered following options.

• Apache
• Solr
• Sindice
• Hakia
• Sphinx
• Sensebot
• Dspace

I want second opinion and expert advice on which alternate should I use and how can I manage XML files scraped from web (Terabytes of data) to be used as database for searchI came across this similar link on stack overflow.