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: David worked at a sushi restaurant. Sentence 2: But he never thought of becoming a chef. Sentence 3: One day, the chef asking him to help make sushi. Sentence 4: And then, David practiced making sushi with him everyday. Sentence 5: Several years later, David was good enough to become a sushi chef.

Sushi Chef