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: Harry was studying to be a geologist. Sentence 2: He was collecting rock samples in Yellowstone. Sentence 3: Then he turned around and saw a large bear. Sentence 4: Harry wasn't bothered and continued with his work. Sentence 5: The bear looked at him puzzled and walked away. Choices: a. Bear. b. The morning at the beach.
Output:
a