1. One or more computer-readable storage devices that store executable instructions to provide search results, the executable instructions, when executed by a computer, causing the computer to perform acts comprising: receiving a query from a user; determining that the query is one to be asked to a person in addition to, or instead of, a search engine; comparing said query to a corpus of information to obtain objective results; comparing said query to a social graph to identify one or more people whose relationship to said user meets a closeness condition and who have an aspect of relevance to said query; creating person results that comprise said one or more people and, for each of said one or more people, an explanation of each person's relevance to said query, said social graph indicating attributes for people in said social graph, said explanation of a given person's relevance comprising an attribute that is indicated in said social graph for said given person, said attribute matching a term in said query; and providing, to said user, a set of results that comprise said objective results and said person results.