Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: The Addenbrookes Hospital is located at Hills Rd, Cambridge. Sentence2: You are welcome, have a nice day. Sentence3: i want to find a hospital in town Sentence4: Thank you goodbye. Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System