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: Tim bought a new dog. Sentence 2: One day he walked the dog in a huge forest. Sentence 3: The dog scampered away into the bushes. Sentence 4: Tim looked for an hour trying to find his dog. Sentence 5: The dog finally appeared carrying the biggest stick ever.

The lost dog