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: Martha had a dog named Butch. Sentence 2: Butch would lie all day on the sofa like a lazy dog. Sentence 3: Martha came home one day with a cat. Sentence 4: Butch woke up from his slumber and lept from the sofa. Sentence 5: Butch grabbed the cat and shook it, and killed the cat. Choices: a. Grumpy. b. Butch Awakens.

b