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: Karen was really afraid of being in a shark attack. Sentence 2: Her friends invited her to a trip to the beach, but she was nervous. Sentence 3: Karen stayed up all night reading about sharks to prepare for the trip. Sentence 4: The next day, Karen went with her friends to the beach. Sentence 5: Karen had a good time and was not attacked by a shark. Choices: a. 911. b. Sharks!.

b