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: The Gym. Sentence 1: Sandra was nervous. Sentence 2: She just got her gym membership. Sentence 3: She walked in the door and was a bit intimidated. Sentence 4: She overcame it though and began working out. Choices: a. A decade later she became a prima ballerina. b. She felt great working out in the gym.
Example Output: b

Example Input: Title: Ouch. Sentence 1: Janice and her friends were trying to win a scavenger hunt. Sentence 2: Her friend Julie read the last clue. Sentence 3: They raced to their destination. Sentence 4: Janice stopped the car and collected the last item. Choices: a. Although this went against his personal views, he needed the money. b. They won the scavenger hunt.
Example Output: b

Example Input: Title: Knock. Sentence 1: There was a knock on the door. Sentence 2: The man inside was busy. Sentence 3: He did not open the door. Sentence 4: There was a louder knock on the door. Choices: a. The man answered the louder knock. b. Same was so grateful for the extra money.
Example Output:
a