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: Fred went on a coaster with his friends. Sentence 2: Unfortunately he was not buckled in right. Sentence 3: He ended up falling off. Sentence 4: His parents saw. Sentence 5: They were horrified.

Coaster accident