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: Helpful. Sentence 1: My son went outside to play. Sentence 2: A few hours after he came back in, my neighbor came over. Sentence 3: He said he wanted to tell me how helpful my son was. Sentence 4: He told me how he helped him rake leaves on his lawn. Choices: a. The next moment I turn my head and see a big ball of fluff in my face! b. I went and found my kid and told him how proud I was.
Example Output: b

Example Input: Title: Going to Concert.. Sentence 1: Neil loves watching rock concerts. Sentence 2: He went to a show with his girlfriend. Sentence 3: They give their tickets to security. Sentence 4: They jump up and down when the music plays. Choices: a. Neil drives his girlfriend home when the concert is done. b. I mixed it in and rolled it around.
Example Output: a

Example Input: Title: Cleanup. Sentence 1: Anna was caught during a silly teenage prank, and arrested. Sentence 2: She was sentenced to 20 hours of community service in a poor area. Sentence 3: As she picked up trash and washed buildings, she reflected. Sentence 4: In the end, Anna felt she'd learned a lot from her service hours. Choices: a. He had to replace the freezer. b. In a way, she was actually glad she had been caught and made to work!
Example Output:
b