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'.

Example Input: Sentence 1: Alan had been hearing noises at night. Sentence 2: The noises were coming from his attic. Sentence 3: Alan decided to check the attic. Sentence 4: Alan discovered rats in the attic. Sentence 5: He called the exterminator that day. Choices: a. 4 years old with a phone. b. Rats in the Attic.
Example Output: b

Example Input: Sentence 1: The man sharpened the saw blade. Sentence 2: His hand slipped. Sentence 3: He cut his arm on the saw blade. Sentence 4: He cleaned up the blood. Sentence 5: He finished sharpening the saw blade. Choices: a. Saw. b. The cookout.
Example Output: a

Example Input: Sentence 1: Frank carried a tray of food towards the table. Sentence 2: Another waiter ran into him. Sentence 3: Frank almost spilled all of the food. Sentence 4: He set the food on the table. Sentence 5: He told his customers that he had almost dropped all of their food. Choices: a. Waiter. b. Disowned Brother.
Example Output:
a