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: Film School. Sentence 1: Andrew had to make a film for his film school. Sentence 2: So he gathered actors he knew. Sentence 3: He got a little film crew together. Sentence 4: They shot a film. Choices: a. The teacher saw it and gave him a C. b. He bought her some chocolate, instead.
Example Output: a

Example Input: Title: Helper. Sentence 1: Anna's teacher picked her as class helper. Sentence 2: She was happy at first. Sentence 3: But the rest of the class called her a teacher's pet. Sentence 4: They picked on her until she was miserable. Choices: a. She reluctantly agreed to do so. b. Anna asked the teacher to pick another helper!
Example Output: b

Example Input: Title: Slippery Road. Sentence 1: Tom lived on top of a hill. Sentence 2: It was extra snowy one day. Sentence 3: The hill was too slippery to get up. Sentence 4: Tom had to park at the bottom. Choices: a. He picked up his car the next day. b. His family understood the situation.
Example Output:
a