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 big cookout. Sentence 2: He invited several family and friends. Sentence 3: Unfortunately he used some bad meat. Sentence 4: Several people got sick. Sentence 5: Tom had given them food poisoning. Choices: a. Old Well. b. Food Poisoning.
[EX A]: b

[EX Q]: Sentence 1: Nancy saw an infomercial for an electric toothbrush. Sentence 2: And she ordered it right away. Sentence 3: But after months of using it, her gums began to deteriorate. Sentence 4: She went to the dentist. Sentence 5: But there was nothing that could be done. Choices: a. Electric Toothbrush. b. Trip to Australia.
[EX A]: a

[EX Q]: Sentence 1: Susie had been doing her homework all day. Sentence 2: She was getting quite tired. Sentence 3: She then decided it would be prudent to take a break. Sentence 4: She went outside to drink water. Sentence 5: She ended up taking a break for an hour. Choices: a. Taking a break. b. New Guitar.
[EX A]:
a