Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: The wave hit the boat. Sentence 2: It flipped the boat over. Sentence 3: The passengers on board were trapped. Sentence 4: Another wave turned the back over. Sentence 5: Some of the passengers survived.

wave