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: A friend asked Bill to watch his dog while he was gone. Sentence 2: The dog was left at Bill's house. Sentence 3: The dog got out of Bill's yard and disappeared. Sentence 4: Bill's friend came back early to look for the lost dog. Sentence 5: The dog was found in a neighbor's garage.

Lost Dog