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.

Ex Input:
Title: Seasick. Sentence 1: Russell was on a cruise with his family. Sentence 2: Things appeared to be going well, at first. Sentence 3: A few hours in, however, Russell felt queasy. Sentence 4: He spent some time leaning over the edge of the boat. Choices: a. She had to drive again to buy a new dozen eggs. b. The rest of the night was spent lying in bed.

Ex Output:
b

Ex Input:
Title: Campus. Sentence 1: Tom was now in college. Sentence 2: He had a dorm room and a roommate. Sentence 3: Tom was nervous about meeting his new roommate. Sentence 4: The new roommate could be mean. Choices: a. Tom met his roommate and he was a cool guy. b. I hit those trees many times but I finally learned to ride my bike!

Ex Output:
a

Ex Input:
Title: Goin To Bed. Sentence 1: I enjoy swimming. Sentence 2: I used to compete on a swim team, but I wasn't very fast. Sentence 3: I often got white ribbons for third place. Sentence 4: One time in my life, I won a first place ribbon! Choices: a. I was very happy about that! b. I hid it in the garage so he wouldn't see it.

Ex Output:
a