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: An owner of a pizza shop became friends with the owner of a taco shop. Sentence 2: They gave each other advertisements to display in the other's shop. Sentence 3: The next week they both had more customers than usual. Sentence 4: The pizza shop owner asked customers where he heard of his shop. Sentence 5: They told him that they saw an ad in the taco shop.

The Agreement