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: The raft went down the river. Sentence 2: It got stuck on a rock. Sentence 3: The river pulled the raft down into the water. Sentence 4: The boaters jumped out. Sentence 5: They never found their raft again. Choices: a. Raft. b. Home Run.

a