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: Maria's child was walking on the sidewalk. Sentence 2: Her shadow followed her. Sentence 3: She noticed the shadow and started to cry. Sentence 4: Maria ran to pick her up. Sentence 5: The shadow vanished. Choices: a. The Helicopter. b. Scared of Ghosts.

b