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: The sun was shining brightly when I got to work yesterday. Sentence 2: A few minutes later I heard thunder! Sentence 3: Before long it was raining hard, with lots of thunder and lightning. Sentence 4: Lightning struck nearby and caused our power to go off. Sentence 5: We were without electricity for two hours! Choices: a. Sarah's movie date. b. Stormy Weather.
Output:
b