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: My friend Dick and I used to play chess in the atrium of our building. Sentence 2: We played speed games during lunch. Sentence 3: One day a stranger walked by and asked if he could play. Sentence 4: He won a game against Dick. Sentence 5: Dick was angered by the stranger's smug look. Choices: a. Angry. b. Guitar.

a