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: Melvin wanted to take a helicopter ride while on vacation. Sentence 2: His grandson wanted to go with him. Sentence 3: They bought tickets and shortly took off. Sentence 4: They went around the lake and saw the waterfall. Sentence 5: They both had a great time that they would remember forever. Choices: a. Helicopter ride. b. In church.

a