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

Ex Input:
Sentence1: Can you recommend a moderately priced restaurant in the South part of town? Sentence2: could i have the address and phone number please? Sentence3: sure, pizza hut cherry hinton is located at G4 cambridge leisure park clifton way cherry hinton and the phone number is 01223 413000. Is there anything else I can help you with? Sentence4: Would you prefer Italian or Modern european food? Sentence5: I don't care. Either one is fine. Sentence6: No, that is all I needed. Thank you. Bye bye. Sentence7: How about Pizza Hut Cherry Hinton. It serves Italian food, is in the moderate price range, and in the south part of town. Sentence8: Goodbye. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I'm going to saint johns chop house. Sentence2: What is your destination? Sentence3: The contact number is 07727071722. Is there anything else I can help you with? Sentence4: I can help you with that. When do you need to leave? Sentence5: No that is all Thank you goodbye. Sentence6: I need the contact number please. Sentence7: Your taxi is booked. Look for a yellow Volkswagen. Sentence8: Please call us anytime. Good Bye. Sentence9: I need to get a taxi out of holy trinity church. Sentence10: I need to arrive at the chop house by 22:30. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Sure, I need it for 2 people at 18:15 on Wednesday. Can I get a reference number please? Sentence2: Sure, Churchill College is popular. It's free admission and is located on Storey's Way. The post code is cb30ds. Sentence3: I really love bistro food Sentence4: we have british, european and indian food all in the west Sentence5: You're welcome! It's been a pleasure! Sentence6: No, can you recommend a popular one for me? Sentence7: Can you look again for me in the same area? Sentence8: How about some high end indian food? There's a place called nice boat, their phone number is 01223302800 and they're on 37 Newnham Road Newnham. Sentence9: Okay, I have you all set! The reference number is GOMW9RVX . Have a great time! Sentence10: Thank you. Take care. Goodbye Sentence11: Graffiti is a lovely British restaurant. Can I make a reservation for you? Sentence12: Ok, how about a restaurant that serves british food? Sentence13: There are 5 colleges in the west. Would you like more information on any of them? Sentence14: Unfortunately, there does not seem to be any bistros in the west side of town, I can look in other areas if you'd like? Sentence15: Great! I'm also looking for an expensive restaurant near the college. Sentence16: i am looking for places to go in town. The attraction should be in the type of college and should be in the west. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User