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: I live on a bay. Sentence 2: One day I went swimming. Sentence 3: I saw a dark shadow in the water. Sentence 4: It was a few feet long. Sentence 5: I hope it was not an alligator.

Dark Shadow