1. A method, comprising: receiving a search request from a user; presenting a list of a plurality of structured queries based on the search request to a human assistant; receiving a selection of one of the plurality of structured queries from the human assistant; obtaining an answer from a source using the selected structured query, wherein the answer is responsive to the search request; and providing the answer to the user.
7. The method of claim 1 , further comprising: obtaining the answer based on a match between the search request and a search query matched to a structured query of the plurality of structured queries.