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: Chris found a box of caterpillars. Sentence 2: His mom thought they were gross and asked him to throw them away. Sentence 3: He want to throw them away but thought they were cute. Sentence 4: Chris decided to keep one. Sentence 5: It eventually turned into a butterfly and flew away.

The Pet Caterpillars