In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Example Input: Title: Scared. Sentence 1: Jimmy watched as his dog killed a mouse. Sentence 2: He looked around the field. Sentence 3: He saw mice scurrying everywhere. Sentence 4: He ran out of the field scared of the mice. Choices: a. It was still a close race, though. b. He climbed a tree and slept there that night.
Example Output: b

Example Input: Title: Spider. Sentence 1: Jessica and Tom were happily married. Sentence 2: One day Jessica saw a spider in their home. Sentence 3: She became very upset. Sentence 4: Tom killed the spider. Choices: a. Jessica became very happy that Tom killed the spider. b. But he managed to ace the exam!
Example Output: a

Example Input: Title: Swollen foot. Sentence 1: Jared's foot had become swollen and painful. Sentence 2: He could no longer bear it so he called for an ambulance. Sentence 3: He was told the foot was infected and in danger. Sentence 4: Doctors were able to relieve the swelling and infection. Choices: a. That parachute opened. b. Jared was on crutches after going home, but recovered.
Example Output:
b