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: Little Jack had never been on a train before. Sentence 2: He asked his parents if they would take him on a train ride. Sentence 3: On a sunny Saturday they told him to get his coat on. Sentence 4: They drove him out to a place he had never been. Sentence 5: Jack's parents took him to board a real-life train! Choices: a. Train Day!. b. Summer Cash.

a