Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: They do not have a fee. It is free to enter. Sentence2: Your tickets are all set, reference number is VKWMNP74 Sentence3: Where are you departing from? Sentence4: I need to arrive in Cambridge by 10:00 please Sentence5: Is there anything else I can look up for you today? Sentence6: No problem! Thanks for contacting the Cambridge TownInfo centre and have a great day! Sentence7: I am looking for a train that leaves for Cambridge on Monday. Sentence8: Thanks! I'm also looking for a good museum in the center of town. Sentence9: Train TR2987 will arrive in Cambridge by 9:52. Would you like to book it? Sentence10: Fantastic. Can you provide me with the address and phone number for the Castle Galleries, please? Sentence11: What is their entrance fee? Sentence12: Hello, I am departing from Ely. Sentence13: They are located at unit su43, grande arcade, saint andrews street and their phone number is 01223307402 Sentence14: There are several trains available, starting at 5:35 am and ending at 11:35 PM. What time would you prefer? Sentence15: No, that's it. Thank you. Sentence16: I have everything I need. Thanks! Sentence17: There are 11 museums, I would recommend castle galleries because it's free. Sentence18: Yes, please. I need 6 tickets and a reference number. Question: Who has spoken the sentence 13? (A) User (B) System
Output:
Answer: (B) System