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: Calvin was very excited. Sentence 2: He'd gotten a new toy for his birthday. Sentence 3: He played with it all night. Sentence 4: When he went to sleep, he put it in his bed with him! Sentence 5: He couldn't wait to wake up and play some more. Choices: a. The Toy. b. Why Is It So Hot?.

a