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: Greg bought a package of cottage cheese. Sentence 2: When he got home he noticed the container was already opened. Sentence 3: Greg brought the cottage cheese back to the store. Sentence 4: The manager exchanged the product. Sentence 5: Greg left with a new package of cottage cheese.

The Cottage Cheese