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 Input:
Sentence 1: Jake had locked himself out of his house. Sentence 2: He was a slender man so he thought he could use the chimney. Sentence 3: He climbed to the roof and shimmied down the chimney. Sentence 4: His feet reached the floor but he could go no further. Sentence 5: Twelve hours later someone heard his screams and he was rescued. Choices: a. Teaching Boys. b. A Costly Mistake.

Ex Output:
b

Ex Input:
Sentence 1: Ted was always volunteering at the homeless shelter. Sentence 2: There was one homeless man he became good friends with. Sentence 3: The man had been homeless for 20 years. Sentence 4: After years of friendship, Ted let the man stay at his house. Sentence 5: In return, the man would do housework for Ted. Choices: a. Had enough. b. Mutually Beneficial.

Ex Output:
b

Ex Input:
Sentence 1: Sophie heard a soft whimpering sound on the other side of her door. Sentence 2: She looked through the peephole but didn't see anything. Sentence 3: As the whimpers grew in intensity, she opened the door. Sentence 4: A puppy laid on the welcome mat all battered and bloody. Sentence 5: She took him in instantly to give him first aid. Choices: a. Kicked Out. b. Whimper in the night.

Ex Output:
b