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

Example Input: Sentence1: You're very welcome. Thank you and goodbye! Sentence2: The earliest train departs Leicester at 05:09 and arrives in Cambridge at 06:54. The cost is 37.80 pounds per ticket. Sentence3: That's all that I need. Sentence4: Any of those will work. Which one is your favorite and where is it located? Sentence5: I'll be departing from Leicester, headed to Cambridge. What do the prices look like? Sentence6: No problem. There are a lot of other options like boating, cinema, colleges, a concerthall, museums, nightclubs, a park, theatres and swimming pools. What are your interests? Sentence7: I also need a train on Wednesday, arriving by 19:00. Sentence8: I'm looking for something to do in the centre of town. Sentence9: Travel time is approximately 105 minutes. Sentence10: Would you like any more information on other attractions? Sentence11: I would really like it to be a attraction type. Sentence12: What is the travel time? Sentence13: Great! I found a lot of things that match what you're looking for. Do you like architecture? Sentence14: I can help you with that. What are the departure and destination cities you were looking for? Sentence15: No, that will be all. Thank You for all your help. Sentence16: I'd try the cambridge contemporary art museum, at 6 trinity street. Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: We have many hotels that fit your needs, is there a specific area you're looking at? Sentence2: We have TR2475 that leaves cambridge at 07:50 and arrives ely by 08:07. Will that work for you? Sentence3: It's in the north area and they do have parking. Sentence4: Thanks, that's all i need! Sentence5: Are you sure you don't need me to book your hotel for you? Sentence6: Do they have free parking? What area is it located? Sentence7: Acorn guest house fits your needs. Would you like me to book your stay? Sentence8: something that has free wifi Sentence9: I need to find a guesthouse with a moderate price range. Any places to stay? Sentence10: That has been booked. Reference number is : FSUGM4NQ . Sentence11: Can you help with transit information? I need to go to ely by train on Sunday and need to arrive by 09:00 departing cambridge. Sentence12: Yes, that sounds perfect. Can you purchase 7 tickets for me please? Sentence13: Excellent. I also need a train to ely. Sentence14: No problem. Good bye! Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay. Glad I could be of help. Sentence2: Thank you. Sentence3: I have found Shiraz Restaurant located at 84 Regent Street City Centre, would you like me to book you a table? Sentence4: Great, thanks. I think that's all I needed. Have a good day. Thanks. Sentence5: TR3130 leaves Birmingham New Street at 17:40 and it arrives in Cambridge at 20:23. The price is 75.10. The travel time is 163 minutes. Sentence6: Thank you for contacting Cambridge TownInfo centre. I hope you have a pleasant trip! Goodbye! Sentence7: Sure, the postcode is cb21dp. Is there anything else I can help you with today? Sentence8: No problem. For what day? Sentence9: Monday, and I need for it to arrive by 21:15. Sentence10: No thanks, I just need the postcode. Sentence11: Can you give me the departure time, travel time and the price? Sentence12: TR3130 will arrive by 20:23 if that works for you? Sentence13: I am also looking for a train from birmingham new street to Cambridge. Sentence14: I want to find a place called Shiraz Restaurant please. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output:
Answer: (A) User