REFERENCE RESOLUTION DURING NATURAL LANGUAGE PROCESSING

Systems and processes for operating a digital assistant are provided. An example method includes, at an electronic device having one or more processors and memory, detecting invocation of a digital assistant; determining, using a reference resolution service, a set of possible entities; receiving a user utterance including an ambiguous reference; determining based on the user utterance and the list of possible entities, a candidate interpretation including a preliminary set of entities corresponding to the ambiguous reference; determining, with the reference resolution service and based on the candidate interpretation including the preliminary set of entities corresponding to the ambiguous reference, an entity corresponding to the ambiguous reference; and performing, based on the candidate interpretation and the entity corresponding to the ambiguous reference, a task associated with the user utterance.