You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: Melinda wanted to go to the zoo. Sentence 2: She asked her mom, who agreed to take her. Sentence 3: They got to the zoo early in the morning. Sentence 4: After hours of looking at animals, they went to the gift shop. Sentence 5: Melinda fell asleep in the car going home because of her long day. Choices: a. Losing Weight. b. Zoo Trip.
Output:
b