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: Sam was taking care of his friend's dog. Sentence 2: He took it out for a walk. Sentence 3: The dog got excited and ran off. Sentence 4: Sam was unable to find the dog. Sentence 5: His friend was very upset with him.

Losing a Dog