33. The device of claim 32 , wherein the third type of concept comprises a place, a time, an event, or a person.
32. The device of a claim 27 , wherein the one or more programs further include instructions for: identifying a third type of concept referred to by the secondary user intent for the first substring; identifying a third substring from the first substring corresponding to the third type of concept; and determining a tertiary user intent for the third substring, wherein performing the task flow is further based on the tertiary user intent for the third substring.