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: Amber and Henry went to the zoo. Sentence 2: They saw pigs, zebras, and lions. Sentence 3: Amber wanted to take one of the pigs home as a pet. Sentence 4: She then saw the pig rolling around in the mud. Sentence 5: She changed her mind about having a new pet.

A trip to the zoo