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: The school children took a field trip to the zoo. Sentence 2: They walked around to see all the animals. Sentence 3: Some of the animals were asleep. Sentence 4: The other animals were all playing. Sentence 5: The children were so excited. Choices: a. Where is It. b. Zoo Trip.

b