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: Moore loved to use commas. Sentence 2: He would use commas every sentence. Sentence 3: One day, he realized he didn't know the definition. Sentence 4: He rushed to the dictionary. Sentence 5: Finally, Moore was able to define a comma.

Comma