You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: Okay great, have a good day. Sentence2: Yes, quite a few! There's Broughton House Gallery, the Whipple Museum of the History of Science, and more. Would you like to know more about them, or the others? Sentence3: Yes, can you book it for 3 people and get me the reference number? Sentence4: Primavera is at 10 King s parade CB2 1st, the phone number is 01233357708. What day would you like to board the train? Sentence5: Could I get the address, phone numbers, and postcodes of them please? I'm also looking for a train from cambridge to broxbourne. Sentence6: Can you find me a multiple sports attraction in the centre? Sentence7: No, actually. I am all finished. Thanks for the help. Goodbye. Sentence8: Train TR9580 departs from Cambridge at 10:01 on Sunday and arrives at Broxbourne at 11:01. Would that work for you? Sentence9: Sorry there's no multiple sports in the centre. Would you like to try a different area? Sentence10: There are 11 museums in the area. They are all free. There are several art museums, an archaelogy museum, and a science museum. Sentence11: Yes I would love some information. Sentence12: Are there any museums in the centre? Sentence13: Sunday, and it should arrive by 12:00. Sentence14: Booking was successful, the total fee is 42.96 GBP payable at the station . Reference number is : IRD8RUWO . Do you need help with anything else? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I need to find a hospital nearby that has a hepatobillary and gastrointestinal surgery referral center Sentence2: No, that's it. Thanks! Sentence3: No, I just need the postcode. Sentence4: You're very welcome. Have a great day! Sentence5: Certainly. The postcode is CB20QQ. Anything else I can help you with today? Sentence6: Addenbrookes Hospital located at Hills Rd, Cambridge has that department. Would you like the phone number to that direct department? Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: No thank you I just need their postcode and phone number please. Sentence2: Does the hotel have free wi-fi? Sentence3: I am looking for places to go in Cambridge. I was thinking about visiting a college. Any suggestions? Sentence4: Certainly, Christ's College is free and located at Saint Andrew's Street, cb23bu. Is there anything else I can help with today? Sentence5: Yes it does and parking. Would you like me to book a room for you? Sentence6: that is all for now. thanks for your help. Sentence7: Can you help me find the Limehouse hotel? Sentence8: Thanks for using this service. Have a nice day. Sentence9: The post code is cb42je. The phone number is 01223300552. Sentence10: Would you be interested in visiting Christ's college located in the city centre on Saint Andrew's Street? Sentence11: That sounds great, I'll need the address and entrance fee information, please. Sentence12: Sure can. It's a moderately priced, 4 star guest house at 78-80 milton road. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User