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: Last summer I went to a concert. Sentence 2: The concert was in a park, so I decided to dress in cooler clothes. Sentence 3: I met my best friend in the parking lot of the venue. Sentence 4: We walked into the concert together. Sentence 5: We listened to our favorite music for three hours. Choices: a. Mitch travels. b. Concert.

b