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: Greg was playing football. Sentence 2: He was tackled to the ground. Sentence 3: He felt a sharp pain in his leg. Sentence 4: He looked down to inspect it. Sentence 5: He saw that it was injured. Choices: a. Leg. b. Phone Calls.

a