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

Ex Input:
Sentence1: I am planning a trip in Cambridge Sentence2: I found the express by holiday inn cambridge. It is a 2 star expensive hotel free parking and internet. The address is15-17 norman way, coldhams business park. Sentence3: Where will you be departing from? Sentence4: Thanks! i'm also looking for a place to stay in the east. Sentence5: I need to first find out what train will take me away after I am done. I need to get to Peterborough on Sunday by 21:45 Sentence6: Departing from Cambridge. I need the departure time, train ID and price. Sentence7: Okay, we've got a few options. The best looks like train TR6958 that leaves Cambridge at 20:34 and arrived in Peterborough at 21:24. The price is 13.2 pounds. Sentence8: That sounds like fun! What information can I help you find? Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: You're welcome, glad I could help. Sentence2: I personally like Parkside Pools. It's in the center of town, on Gonville Place. Sentence3: Any area is fine. Which of the 4 swimming pools do you suggest? Sentence4: It is cb11ly. Is there anything else I can help you with? Sentence5: Where will you be departing from? Sentence6: Thanks. That was all I needed. Goodbye. Sentence7: I am departing from Cambridge. Sentence8: I am looking for information on places to go in Cambridge. Can you help with that? Sentence9: My destination is london kings cross Sentence10: Can I get the postcode as well? Sentence11: I can help with that. Is there a particular area you're interested in? Sentence12: Yes, there are 4 swimming pools that match those requirements. Is there a particular area you would like to go to? Sentence13: There are 278 trains that meet that criteria. Would you like to narrow down your options by departure site, destination, or arrival time? Sentence14: I have made that reservation and your reference number is 1702SDBO . Sentence15: TR1502 arrives in london kings cross friday at 11:51. Would you like me to book you any seats? Sentence16: I also need a train leaving after 11:00 on friday Sentence17: What I'd really like is to find a swimmingpool. Sentence18: Yes book for 8 people and I need a reference number Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Perfect, thanks. Could you also tell me if there are any trains from norwich to cambridge that arrive by 10:00 on friday? Sentence2: Is there anything else I can help you with today? Sentence3: Certainly, did you have a particular place in mind? Sentence4: There are four trains arriving before 10:00 on Friday. They leave norwich every hour on the :16 starting at 05:16 to 08:16 Sentence5: Well the travel time for the TR3293 that leaves at 8:01 is 79 minutes. Sentence6: old schools is in trinity lane and entrance is free. can i give you their phone number? Sentence7: Can you help me find places to go in town? Sentence8: That is all I needed have a nice day. Sentence9: An architecture attraction would be good. Sentence10: Can I have the travel time? And the train ID please. Sentence11: What area is trinity lane in? I'd love to find a train going to cambridge as well. Sentence12: Old Schools is located in the centre area of town. Is that location convenient for you? Sentence13: I'm glad I could help. If you think of anything else you need feel free to contact us any time. Sentence14: Great, thank-you! That is perfect. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User