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

Example Input: Sentence1: Can I get a taxi to take us from the gallery to the restaurant? Sentence2: I'm looking for a museum with a restaurant. Sentence3: Yes please. I need the reference number too. Sentence4: Do you know of any restaurants in the centre of town that serve lebanese food? Sentence5: Yes I'd like one for Sunday for 19:15, there will be 8 of us. Sentence6: Great. Please get me their address. Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : H570Z3KN . do you have any other questions Sentence8: Is it moderately priced? Sentence9: Yes. Ali Baba is moderately priced. Would you like me to make a reservation for you? Sentence10: No, that will be all thank you. Sentence11: Ali Baba is in the centre of town serving lebanese food Sentence12: Ok, a white audi will pick you up at cafe jello gallery and bring you to Ali baba by 19:15. You can contact the driver at 07646811518. Anything else? Sentence13: will you need to have all eight of you seated at the same table? Sentence14: How does the Cafe Jello Gallery sound? It is located in the west and does not have an entrance fee. Sentence15: You're welcome. Thank you. Sentence16: Cafe jello gallery can be found at 13 magdalene street. Is there anything else I can do for you? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes, both the Hobsons House and the college are both in the west part of town. Would you like information for the college? Sentence2: Booking completed! Your ca is a black lexus and the contact number is 07301130189 Sentence3: It doesn't matter. Sentence4: Queens college is quite pretty. It is on Silver street in the west. Sentence5: Perfect! That's all I need today, thank you! Sentence6: No, I need something in the western part of town. Sentence7: There are lots of churches in the centre of town. Would you like to visit one? Sentence8: What would you recommend? I don't have a preference. Sentence9: There are many colleges and museums on the west side. There is also one entertainment center. Which do you prefer? Sentence10: Do you know when you want to get there by? Sentence11: You are very welcome. Glad I could help. Have a nice day. Sentence12: Is it near the Hobsons House hotel? Sentence13: Actually, the college sounds great. I don't need more info. But I would love a taxi to get me from Queens College to Hobsons House. I want to leave by 16:30. Sentence14: Hello. I'm looking for a few good places to see in town on my next visit to cambridge. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I need to depart from Cambridge and arrive at Stevenage. I need to leave after 12:30 on Saturday. Sentence2: Greetings, I am planning a trip in Cambridge and am looking for entertainment venues in the centre of town. Sentence3: The Museum of Archaelogy and Anthropology is located in the center of town. Sentence4: I have a 13:21 train departing Cambridge and arriving in Stevenage at 14:10 on Saturday. Would that work for you? Sentence5: Okay, sounds good. Will you book that for 4 people and get me a reference number, please? Sentence6: There are 5 different entertainment venues in cambridge, however known are located in the centre. Did you want to visit on in a different part of town? Maybe the east? Sentence7: I also need a train. Sentence8: Thank you can I have the entrance fee, postcode, and phone number? Sentence9: No that was all, I got the reference number. Have a great day. Sentence10: there are several trains, where is your departure and when? Sentence11: We don't have anything listed under entertainment for the centre area, but there are a variety of other things to do. Are you interested in the theater or perhaps the cinema? Sentence12: No I prefer the centre area. Sentence13: Sure, there isn't an entrance fee, that's nice. The phone number is 01223333516 and the postcode is cb23dz. Sentence14: What about a museum in the center of town -- is there anything like that? Sentence15: It has been my pleasure. Feel free to contact us with any questions that may arise. Sentence16: Yes, that's perfect! Sentence17: Alright, your train tickets have been booked and your reference number is ZEWG9O60 . Is there anything else I can help you with? Sentence18: It appears that TR6998 will be your best bet. It leaves at 13:21. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System