1. A computer-implemented method, comprising: receiving multiple search queries; identifying, for each search query of the received search queries, an entity associated with (i) the search query or (ii) a pair comprising the search query and an answer that a search engine generates in response to the search query; after receiving the search queries, receiving a voice query that includes a pronoun; identifying a plurality of acoustic parameters associated with the pronoun, wherein the identified plurality of acoustic parameters comprise two or more of volume, pitch, frequency, duration between each spoken word, and spoken duration of words or phrases; selecting, from among the identified entities associated with (i) the search queries or (ii) the pairs that each comprise a search query and an answer that a search engine generates in response to the search query, a particular entity based at least on the identified plurality of acoustic parameters associated with the pronoun comprising two or more of volume, pitch, frequency, duration between each spoken word, and spoken duration of words or phrases; modifying the voice query based at least on the selected entity; and obtaining an answer that the search engine generates in response to the modified search query.