Task: Speaker Identification
Input (English): Sentence1: There are no restaurants matching your request. May I help you find a different restaurant? Sentence2: I have four restaurants matching your request, would you like to hear them all or narrow your request? Sentence3: I'm looking for an English restaurant that's moderately priced.. Sentence4: Okay, then I'm looking for a restaurant with Chinese food that's moderately priced. Question: Who has spoken the sentence 1? (A) User (B) System
Output (English): Answer: (B) System