p can better reflects the user's real search intent than the original q, as it presents the structured semantic information needed instead of a simple word string.
a document di can better satisfy a user's information need if it contains corresponding structured semantic information in p. Suppose that Ti is the set of annotated tokens extracted from document di, we compute a re-ranking score, denoted by RScore, for document di as follows: where is an annotated token in p and t is an annotated token in di.