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 ordered chicken nuggets at a fast food restaurant. Sentence 2: He took a seat at an empty table. Sentence 3: He opened up his food. Sentence 4: There was a piece of gum in one of the chicken nuggets. Sentence 5: The cashier refunded his order.

Unexpected Visitor