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: Ice Skating. Sentence 1: Tim was an athlete. Sentence 2: He had never been ice skating before. Sentence 3: He decided to go one day with his friends. Sentence 4: They went ice skating. Choices: a. Tim had fun ice skating for the first time. b. Now Tom is fluent in the Russian language!
Example Output: a

Example Input: Title: Learning to dance. Sentence 1: I really wanted to learn how to dance in college. Sentence 2: So I called up a friend of mine to teach me. Sentence 3: He was a professional dancer and was very good. Sentence 4: He taught me everything he knew about dancing. Choices: a. It made me better and now I am also a really good dancer. b. I'm really enjoying playing the drums now.
Example Output: a

Example Input: Title: Lisa's Achievement. Sentence 1: Lisa's parents allowed her to adopt three cats. Sentence 2: Lisa enjoys caring for the pets and entering them in cat shows. Sentence 3: At first, her parents thought this was a waste of time and money. Sentence 4: Lisa recently won a very prestigious award and they are proud of her. Choices: a. They now believe their daughter's hobby is worthwhile. b. Thelma bought two benches like this and solved her problem.
Example Output:
a