I'm guessing you're parsing a mediawiki page..in which case the built-in API is more flexible and with more well-defined (xml) responses. If this is the case, the url for the mediawiki is whateveryourwiki/api.php, e.g. http://en.wikipedia.org/w/api.php
Or in any case, try harder if you can for your incoming data to be more well defined if possible. Assuming an attribute for your data based on column number is precarious.