15. A computer-readable storage medium storing computer executable instructions which, when executed by a computer, will cause computer to perform a method comprising: receiving a first utterance comprising a query for a plurality of items; displaying the plurality of items in response to the first utterance on a display; storing metadata related to the plurality of items; receiving a second utterance; applying a disambiguation model to the second utterance, wherein the applying includes: identifying whether the second utterance is directed to at least one item in the plurality of items on the display, extracting a plurality of referential features from the second utterance, and identifying an item among the plurality of items on the display corresponding to the second utterance by comparing at least some of the plurality of referential features extracted from the second utterance to the metadata and by determining a lexical match between the utterance and the metadata associated with the item; and performing, by the computing device, an action associated with the second utterance upon identifying the item corresponding to the second utterance.
15. A computer-readable storage medium storing computer executable instructions which, when executed by a computer, will cause computer to perform a method comprising: receiving a first utterance comprising a query for a plurality of items; displaying the plurality of items in response to the first utterance on a display; storing metadata related to the plurality of items; receiving a second utterance; applying a disambiguation model to the second utterance, wherein the applying includes: identifying whether the second utterance is directed to at least one item in the plurality of items on the display, extracting a plurality of referential features from the second utterance, and identifying an item among the plurality of items on the display corresponding to the second utterance by comparing at least some of the plurality of referential features extracted from the second utterance to the metadata and by determining a lexical match between the utterance and the metadata associated with the item; and performing, by the computing device, an action associated with the second utterance upon identifying the item corresponding to the second utterance. 20. The computer-readable storage medium of claim 15 , wherein performing, by the computing device, an action associated with the second utterance, comprises: selecting the item on the display; displaying additional information about the selected item; and executing an activity associated with the selected item.