Q: In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
Sentence1: Bob walked into the ship elevator and heard a voice on the speaker. Sentence2: He told his wife the voice sounded the same as his audio book. Sentence3: They were surprised to hear the voice in the hallway to their cabin. Sentence4: The voice could still be in their cabin, so they called the steward.
A:
The steward found that the voice was coming from Bob's pocket phone.