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

Example Input: Sentence1: There are 2, both free. They are sheep's green and lammas land park fen causeway, and other is wandlebury country park. Would you like information on either one? Sentence2: There are only 4 boat attractions in town. Camboats in the east. Riverboat georgina is in the north. Scudamores punting company and the cambridge punter are in the centre of town. Sentence3: I'm looking for boats to look at. Can you look in the south? Sentence4: Thanks, could you also book me a taxi between the two locations please? Sentence5: I can arrange a car for you if you'll tell me whether you'll be travelling from the park to the restaurant or vice-versa, and tell me the date and time. Sentence6: Yes, I need to get their phone number and address, please. Sentence7: Could I get the entrance fee for wandlebury country park please? Sentence8: Booking was successful. Expect a grey Lexus. Their number is 07386542982. Anything else? Sentence9: I need to leave the park by 16:15. Sentence10: There are nine places in the south any preference on restaurant type or price range? Sentence11: Are there any boats in the park? Sentence12: The Pizza Hut Cherry Hinton is located in the South and has a moderate price range. Would you like more information? Sentence13: My pleasure. Enjoy your stay. Sentence14: Could you help me find a restaurant in that area? Sentence15: The park is free. There is no entrance fee. Sentence16: Their phone number is 01223323737, and they are located at G4 Cambridge Leisure Park Clifton Way Cherry Hinton. Sentence17: Thank you. Are there any parks in the south? Sentence18: Thank you for all your help. That should be everything today. Sentence19: I'm afraid we don't have any boats in the south. Would you like to try another area? Sentence20: I'd like a moderately priced Italian place. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Wait, I might want to change my mind about that restaurant. Are there any that serve food from Corsica? Sentence2: No, there are none fitting that description, sir. Sorry about that. Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : Q91F26L3 . Sentence4: Do you need any further assistance? Sentence5: Royal spice is cheap and looks great. Sentence6: I'm looking for places to eat in the North part of town. Sentence7: Thank you for using our services. Sentence8: You're more than welcome. May I do anything else for you today? Sentence9: Thanks, will you please book a table for 6 people on saturday at 12:45? Sentence10: its called city stop restaurant, serves european food and address is Cambridge City Football Club Milton Road Chesterton Sentence11: No, thank you. No further questions for now. Goodbye. Sentence12: I figured, my wife asks me odd random question sometimes, had to check. I am all set, thanks. Sentence13: I need a cheap place, please. Sentence14: Perfect! Thank you for all of your help. Sentence15: No, it is expensive. Sentence16: Is it a cheap restaurant? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: It was my please. If I can help with anything else just let me know. Have a great trip. Sentence2: What time would you like to leave or arrive? Sentence3: I have two entries here, both in the centre. I recomend dojo noodle bar. Do you want me to book? Sentence4: Sure the cost of the journey is 17.60 pounds and you confirmation number is X9OY1UCU . Sentence5: Yes please, I'm also looking for an Asian Oriental restaurant within the cheap range. Can you find one for me? Sentence6: I am coming to Cambridge and cannot wait to eat at some of your loal restaurants. Can you help me find a train out after dinner? Sentence7: then train number TR3976 should be ok. can I book? Sentence8: I will be departing from ely and arriving in cambridge. Sentence9: Actually just provide me with the address for that location Sentence10: I certainly can. What are your departing and arriving stations? Sentence11: For dojo noodle bar, address is 40210 Millers Yard City Centre, postal cb21rq, can I assist with anything else? Sentence12: Yes, it will be for 4 people. Sentence13: That is all I need, thank you for your help. Sentence14: Absolutely. Your reference number is X9OY1UCU, and that comes to 17.6 GBP, payable at the station. Is there anything else I can help you with today? Sentence15: I would like to leaver after 9:30. Sentence16: Could you book it for four then? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System