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: Whiteout. Sentence 1: My sister in law is a waitress in an assisted living center. Sentence 2: We were in her apartment last Tuesday, during an inspection. Sentence 3: We saw four bottles of white out on her table. Sentence 4: I asked her why she has so much whiteout. Choices: a. She said she took them from work one day but does not know why. b. He was surprised and happy when he learned he made the team.

Ex Output:
a

Ex Input:
Title: Bad trading day. Sentence 1: Fred was short the market. Sentence 2: He thought it was going down. Sentence 3: Unfortunately the opposite happened. Sentence 4: The market rallied. Choices: a. Jerry cried himself to sleep. b. Fred lost his money.

Ex Output:
b

Ex Input:
Title: Wrong Dinner. Sentence 1: Bobby was hungry and decided to eat what is in the refrigerator. Sentence 2: Bobby saw there was some leftovers. Sentence 3: He heated the leftovers up and began to eat it. Sentence 4: Bobby's father came in and got mad at Bobby. Choices: a. Thankfully she got it. b. Bobby ate his father's dinner.

Ex Output:
b