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: Tim's dad had done a lock-in at the rec center when he was a teenager. Sentence 2: He remembered it fondly and thought Tim would enjoy the same thing. Sentence 3: So when he read about the YWCA Lock-In, he signed Tim up right away. Sentence 4: At first Tim was reluctant to go, but soon found himself having fun. Sentence 5: In the morning, he emerged laughing and joking with his new friends!

YWCA Lock-In