Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: Joan loved to go to the opera every Sunday. Sentence 2: One trip she met a young homeless girl. Sentence 3: She took the girl to the opera with her. Sentence 4: Joan bought her a meal after the show. Sentence 5: Joan called the police after the girl was done eating. Choices: a. The Opera. b. Halloween.

a