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 boy kicked the rock. Sentence 2: The rock came loose. Sentence 3: It fell down a hill side. Sentence 4: Someone was walking up the hill. Sentence 5: The rock almost hit them.

rock