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.

Ex 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!

Ex Output:
a

Ex Input:
Title: Seaside. Sentence 1: Shelly and Mike wanted to buy a house by the ocean. Sentence 2: Since they were going to retire they wanted to move. Sentence 3: They decided to move to California. Sentence 4: They met with a real estate agent to begin their hunt. Choices: a. After a few months they found the perfect house and bought it. b. Ted accidentally rear ended a SUV in front of him.

Ex Output:
a

Ex Input:
Title: First Date. Sentence 1: Tom asked his crush out on a date. Sentence 2: He was really nervous. Sentence 3: Tom tried his best to make everything perfect. Sentence 4: Unfortunately the girl wasn't that into him. Choices: a. Tom never get a second date. b. Then I knew it was a problem with him, not me.

Ex Output:
a