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: Susan was playing basketball with her friends. Sentence 2: The sky started to look very stormy. Sentence 3: They figured they had time to finish the game. Sentence 4: They were wrong. Sentence 5: The rain came very quickly and heavy. Choices: a. The rain. b. Stove Top Fire.
Output:
a