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 kids were playing outside. Sentence 2: They all climbed onto the swing. Sentence 3: They swung back and forth. Sentence 4: As they got higher and higher, they all screamed. Sentence 5: It was so fun being high in the air! Choices: a. Fear of ducks watching you. b. The Swing.

b