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: There was a caterpillar in a habitat in Kate's class. Sentence 2: The kids were learning about the transformation to a butterfly. Sentence 3: It was in it's cocoon for a long time. Sentence 4: Finally it began to emerge. Sentence 5: After a whole day the caterpillar emerged a butterfly.

The Butterfly