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: Mike's stepfather was helping build the roof to a tree fort. Sentence 2: Mike was sitting under the roof while his stepfather was up hammering. Sentence 3: The tree fort was looking really good. Sentence 4: As his stepfather was hammering another hammer slid off the roof. Sentence 5: It landed right on Mike's skull and split his scalp open.

The Tree Fort