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: Walt and his mother were cleaning out the garage. Sentence 2: Walt tossed a sleeping bag to his mother. Sentence 3: She caught the bag, but twisted her back and injured it. Sentence 4: She underwent major surgery for her back the following week. Sentence 5: Walt was upset that he had hurt his mother's back.

Sleeping Bag Toss