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: Chunk. Sentence 1: Chunk was the fattest kid in school and everyone hated him. Sentence 2: Chunk even hated himself. Sentence 3: Chunk got a weird cancer and became weirdly thin. Sentence 4: All the kids made fun of him for being so skinny. Choices: a. Cal sold off everything but the chainsaw to Mike. b. Chunk decided that people were far worse than cancer.

Ex Output:
b

Ex Input:
Title: Counseling or Divorce. Sentence 1: Heather and her husband have been together for twenty years. Sentence 2: He has cheated on her with another woman at least three times. Sentence 3: Finally Heather is started to think that her marriage isn't working. Sentence 4: She thinks long about the various choices that she has to make. Choices: a. Ella wished she'd agreed to go to church sooner! b. Heather decides that maybe they need to try counseling services.

Ex Output:
b

Ex Input:
Title: Folk Music. Sentence 1: I am a big fan of Phil Ochs. Sentence 2: His protest songwriting is as good as Bob Dylan's. Sentence 3: I decided to research his life. Sentence 4: I learned that he died very young and suffered from mental illness. Choices: a. Now I find Phil Ochs a tragic as well as inspiring person. b. It was feed corn and did not taste good at all!

Ex Output:
a