Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: The address and the postcode are: 2 Rose Crescent City Centre cb23ll Sentence2: How about mediterranean? Sentence3: No, but I would like to have the address and postcode. Sentence4: Excellent! Thank you so much for the help! Sentence5: The gardenia fits your criteria and serves Mediterranean. Would you like me to make a reservation? Sentence6: Now I need to find a restaurant in the centre of town that is cheap. Sentence7: Alright! Enjoy your stay in Cambridge! Sentence8: The restaurant should serve Greek food. Sentence9: I am looking for places to go in Cambridge. Sentence10: The first college alphabetically is Christ's College, which is free to enter. The postcodee is CB23BU and the phone number is 0122334900 Sentence11: No, I have everything I need. Sentence12: I'm looking for a college. Will you please give me the entrance fee, postcode, and phone number? Sentence13: There are 79 places to go in my database. Can you narrow down your requirements, please? Perhaps by type or area? Sentence14: Okay I have as many as 15 choices that satisfy those criteria. Would you like to narrow it down by food type? Sentence15: You're welcome. Do you require further assistance? Sentence16: Sorry, no results returned for Greek food Question: Who has spoken the sentence 4? (A) User (B) System
Output:
Answer: (A) User