1. A method comprising: identifying a plurality of web pages resulting from a search based on a search query; employing at least one processor to automatically extract one or more item lists from one or more web pages of the plurality of web pages based at least on one or more list pattern identification techniques, the one or more list pattern identification techniques including identifying terms that are in parallel positions in a sentence or continuous lines according to a text pattern in a respective web page of the one or more web pages as a respective item list of the one or more item lists, the respective item list of the one or more item lists including two or more related words or phrases included in the respective web page of the one or more web pages, wherein at least one of the two or more related words or phrases is related to the search query and does not include a keyword for the search query; weighting the one or more item lists; clustering the one or more weighted item lists based on a determination that at least some of the item lists include one or more similar items; and generating, based at least in part on the clustering, one or more query dimensions that summarize an aspect of the search query, at least one of the one or more query dimensions comprising a plurality of items from a cluster of weighted item lists.