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: Bob has been allergic to bananas all his life. Sentence 2: He had avoided a major reaction for years. Sentence 3: His new girlfriend forgot about Bob's allergy. Sentence 4: She made Bob a dish that had a small amount of bananas in it. Sentence 5: Bob ate the dish and ended up taking a trip to the emergency room.

Allergy attack.