Instructions: 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: Dora was a weather fanatic. Sentence 2: She was obsessed with all sorts of weather phenomenon. Sentence 3: She decades years trying to witness ball lightning with her own eyes. Sentence 4: After over a 500 expeditions, she finally saw it last night. Sentence 5: She said she will never see anything so amazing ever again. Choices: a. Weather Woman. b. The Nose.
Output:
a