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.

Input: Consider Input: Title: Driving. Sentence 1: Susan was afraid to drive because she had never done it before. Sentence 2: She asked a friend to give her lessons. Sentence 3: Susan's friend drove her all over town the next day. Sentence 4: Susan felt more comfortable after the lesson. Choices: a. Susan decided to go take the test to get her driver's license. b. Tom made more money than ever before.

Output: a

Input: Consider Input: Title: Barbecue. Sentence 1: The man wanted to have a barbecue. Sentence 2: He invited lots of friends over. Sentence 3: He bought lots of meat. Sentence 4: It poured down rain on the day of the barbecue. Choices: a. The man had to cancel the barbecue. b. Her mom went to the park and found her.

Output: a

Input: Consider Input: Title: Ex Girlfriend. Sentence 1: John was at the bar with friends. Sentence 2: He noticed his ex girlfriend walked in. Sentence 3: John was mildly upset. Sentence 4: She noticed him. Choices: a. They exchanged pleasantries and moved on. b. She was right, and I've been in choir ever since.
Output: a