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: It was a hot day, so the family drove to the water park. Sentence 2: They applied their sunscreen and set off to enjoy the slides. Sentence 3: After some time, they took a break in the lazy river. Sentence 4: After hearing the wave signal, they got in the wave pool for a swim. Sentence 5: At the end of the day, they showered and prepared to head home. Choices: a. Beach day. b. Water Park.

b