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: Donny and his family went to the zoo. Sentence 2: Donny's parents asked him which animal he would like to see. Sentence 3: Donny said he wanted to see his favorite animal, the zebra. Sentence 4: His family and he searched the zoo for hours for a zebra enclosure. Sentence 5: That particular zoo did not have any zebras. Choices: a. Online Work. b. Zebras.

b