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: Alison has to always share with her little sister. Sentence 2: She doesn't like sharing her favorite toys with anyone. Sentence 3: Her little sister just recently got a new toy as a birthday present. Sentence 4: Alison wanted to play with the toy. Sentence 5: She was surprised her little sister let her play with the toy. Choices: a. Sharing. b. Walk.

a