1. A method for operating an automated assistant, comprising: at an electronic device comprising a processor and memory storing instructions for execution by the processor: obtaining a text string from a speech input received from a user, wherein the text string includes a pronoun; deriving information from a communication received at the electronic device prior to receipt of the speech input, wherein the communication was received from a sender separate from the user, and the information includes a name of the sender; and deriving a user intent from the text string and the name of the sender, wherein deriving the user intent includes determining that the pronoun refers to the sender.
3. The method of claim 1 , wherein deriving the user intent includes: interpreting the text string to derive a plurality of candidate interpretations of user intent; and selecting one of the plurality of candidate interpretations of user intent based on the determination that the pronoun refers to the sender.