Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Addenbrookes Hospital is the closest hospital. Do you need a particular department? Sentence2: Okay, thank you for your help. That's all I need. Sentence3: Yes, I just need the postcode please. Sentence4: I am looking for the nearest hospital please. Sentence5: you are welcome any time Sentence6: Addensbrookes Hospital does have a teenage cancer trust unit. Would you like information about that? Sentence7: It is CB20QQ. Sentence8: I need to find a hospital with a teenage cancer trust unit. Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System