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: Safe Car. Sentence 1: The wife picked a car for her husband. Sentence 2: She bought the safest car she could find. Sentence 3: Her husband was in an accident. Sentence 4: The car saved the husband's life. Choices: a. Caleb fell asleep watching the movie. b. The couple people became lifelong customers of that car company.

Ex Output:
b

Ex Input:
Title: Waiting in line for the autograph. Sentence 1: We finished the concert. Sentence 2: Afterwards my mom wanted an autograph. Sentence 3: I told her I would stay in line with her. Sentence 4: So I did without a problem. Choices: a. The dad bought it for one dollar. b. She got an autograph very quickly.

Ex Output:
b

Ex Input:
Title: Brittany rocks the stage. Sentence 1: Brittany was a singer. Sentence 2: She had a big show coming up. Sentence 3: Days before the show she lost her voice. Sentence 4: She rested her voice for those few days she had. Choices: a. The day of the concert she regained her voice and rocked the show. b. He became better at dealing with his aggression.

Ex Output:
a