You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: Bradley was walking through the snow with his friend. Sentence 2: They were half-heartedly arguing when he shoved his friend. Sentence 3: His friend fell into the snow and seemed very mad. Sentence 4: Suddenly he began throwing snow at Bradley. Sentence 5: An all out snow war ensued and the two stayed outside for hours. Choices: a. The Gay Brother. b. The Snow Fight.
Output:
b