12. The apparatus as recited in claim 11 , wherein determining a query-independent relevance of each of the plurality of lines of text in the document includes identifying a set of one or more query-independent features in each of the plurality of lines of text in the document, and wherein determining a query-dependent relevance of each of the plurality of lines of text in the document includes identifying a set of one or more query-dependent features in each of the plurality of lines of text in the document.
11. The apparatus as recited in claim 9 , wherein determining a relevance of each one of a plurality of lines of text of a document based upon the intent of the query, content of the query, and content of each of the plurality of lines of text comprises: determining a query-independent relevance of each of the plurality of lines of text in the document; determining a query-dependent relevance of each of the plurality of lines of text in the document; and calculating the relevance of each one of the plurality of lines of text based upon the intent of the query, the query independent relevance of the one of the plurality of lines of text in the document and the query dependent relevance of the one of the plurality of lines of text in the document.