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: Alejandro has never been to a zoo. Sentence 2: His boyfriend surprised him to a trip to the zoo on his birthday. Sentence 3: Alejandro got to see so many animals he has never seen in person. Sentence 4: His favorite animals were the otters and elephants. Sentence 5: Alejandro cannot wait to go again. Choices: a. Zoo. b. Best Friends.

a