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: Mike decided to go to the zoo with his little brother. Sentence 2: They went around looking at all the different animals. Sentence 3: Eventually Mike and his brother ended up at the monkey exhibit. Sentence 4: There they interacted with monkeys and enjoyed themselves. Sentence 5: Mike and his little brother had a great time watching the monkeys. Choices: a. Monkey. b. Matt's Keys.

a