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: Dan and his friends agreed to a reunion next summer. Sentence 2: Dan always wanted to have a reunion with his friends. Sentence 3: Dan decided they should go on a cruise for their reunion. Sentence 4: When Dan presented the idea, they all agreed. Sentence 5: Dan could not wait for his friends to be reunited on the cruise. Choices: a. nature. b. Best Friends Reunion.

b