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: Blind dancer. Sentence 1: Tom was blind. Sentence 2: He loved to dance. Sentence 3: He practiced dancing every day. Sentence 4: He took part in a dance competition. Choices: a. He became the first blind person to win the competition. b. Now she still misses her old home, but the ocean is now her new home.
Example Output: a

Example Input: Title: Efficient Holiday. Sentence 1: Kyle and Kim went to Madrid for a holiday. Sentence 2: They went with only each other to maximise their time. Sentence 3: This was because they didn't enjoy the dynamics of a big group. Sentence 4: People would always end up losing out because of others' choices. Choices: a. This time, they did everything they wanted to do with time to spare. b. Jason lived the rest of his life in a little town in Mexico.
Example Output: a

Example Input: Title: Rainstorm. Sentence 1: Meg tried to race home before the storm hit. Sentence 2: Lightning flashed across the sky. Sentence 3: Raindrops began to splatter on the windshield of the car. Sentence 4: Meg arrived home and closed all the windows. Choices: a. I was afraid we might crash. b. Sheets of rain fell on the house.
Example Output:
b