Hello all, is there a query language for wiki syntax? (NOTE: I really do not mean the Wikipedia API here.)

I am looking for an easy way to scrape data from Wiki pages. In this way, we could apply a crowd-sourcing approach to knowledge extraction from Wikis.

There must be thousands of data scraping approaches. But is there one amongst them that has developed a "wiki scraper language" ? Maybe with some sort of fuzziness involved, if the pages are too messy. I have not yet worked with the XML transformation of the wiki markup:

*action=expandtemplates ** generatexml - Generate XML parse tree

Is it any good for issueing XPATH queries ?

Thank you very much, Sebastian