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'.

[EX Q]: Sentence 1: Tom had a heavy duty backpack. Sentence 2: It was so thick he did not like using it for small day trips. Sentence 3: Tom needed to purchase a new backpack. Sentence 4: .Tom purchased a smaller backpack. Sentence 5: Tom was very happy with his new and small backpack. Choices: a. Backpacks.. b. The Tackle Box.
[EX A]: a

[EX Q]: Sentence 1: My dog has gained some extra weight. Sentence 2: I've been trying to take him for a walk every day. Sentence 3: He's too small to walk for long. Sentence 4: I end up having to carry him home. Sentence 5: At least I'll lose some weight. Choices: a. Heart Beat. b. A walk.
[EX A]: b

[EX Q]: Sentence 1: Bob was writing his new novel. Sentence 2: Stacks of papers piled high on his desk. Sentence 3: He was getting hot, so he decided to open a window. Sentence 4: A gust of wind blew into the room. Sentence 5: Papers flew everywhere. Choices: a. Wind. b. Tooth Fairy Part 2.
[EX A]:
a