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: I worked for the MBTA. Sentence 2: A friend of mine recruited me to join the BSRA. Sentence 3: It was a transit buff organization that had a magazine. Sentence 4: One year I got a photo of a trolley published in the magazine. Sentence 5: I proudly showed it off at work. Choices: a. Joke's On.... b. Photo.

b