46. The system of claim 44 , wherein the one or more processors are further configured to execute the stored instructions to cause the system to suggest the phrase extension to the user to use in the query.
46. The system of claim 44 , wherein the one or more processors are further configured to execute the stored instructions to cause the system to suggest the phrase extension to the user to use in the query. 47. The system of claim 46 , wherein the phrase extension is selected from a plurality of phrase extensions of the identified phrase, based on information gains of the plurality of phrase extensions given the identified phrase.