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: Nick was walking home from school. Sentence 2: And it was a really hot day. Sentence 3: But blocking the sun with his books helped a lot. Sentence 4: He decided to buy an umbrella. Sentence 5: And he was much cooler while walking around in the sun.

Umbrella