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: 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: The Love Letter. Sentence 1: Kevin was playing a joke on his sister. Sentence 2: He wrote a love letter and signed it from her crush. Sentence 3: Kevin slipped the note in her backpack. Sentence 4: His sister read the note. Choices: a. She recognized Kevin's handwriting and was mad at him. b. She made Kennedy help her clean the dresser.

Ex Output:
a

Ex Input:
Title: Tornado coming!. Sentence 1: Bob listened to the weather report on TV. Sentence 2: There was a tornado headed his way. Sentence 3: Bob had prepared his home basement with emergency supplies. Sentence 4: He decided to shelter in place in his basement. Choices: a. Max and Sue now enjoy every waking moment with each other. b. The tornado passed more than a mile from his house so he was safe.

Ex Output:
b