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: The family was going camping. Sentence 2: They bought a new air mattress. Sentence 3: On their first day, they blew the mattress up. Sentence 4: It got so full, it popped! Sentence 5: The family had to sleep on the hard ground.

The Mattress