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

Example Input: Sentence1: I would like a restaurant serving swedish food in the north part of town. Sentence2: I don't care. Sentence3: What is the address, phone number, and price range? Sentence4: I'm sorry but there are no Swedish serving restaurants in that area. Would you like to expand your search? Sentence5: Thank you goodbye. Sentence6: City Stop Restaurant is an expensive restaurant on the North side of town. Sentence7: The Royal Spice restaurant has a cheap price range. Sentence8: Is there a restaurant on the North side of town? Sentence9: How about indian food? Sentence10: it's address is Victoria Avenue Chesterton, and phone number is 01733 553355. Sentence11: There are several restaurants in the north part of town. Do you have a preference of price range or type of food? Sentence12: Good bye. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

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: Thank you, goodbye. Sentence2: thank you good bye Sentence3: Thank you, goodbye. Sentence4: Thank You. Sentence5: I am looking for an expensive restaurant that serves Korean food. I would like the address and area, please. Sentence6: The Little Seoul fits fits your price request. It is located at 108 Regent Street City Centre. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System