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: The Halloween Party. Sentence 1: Susan was invited to a Halloween party. Sentence 2: She planned her costume for weeks. Sentence 3: The day of the party, Susan donned her costume. Sentence 4: Everyone loved Susan's costume. Choices: a. Susan won first place in the costume contest. b. From then on Tom didn't stuff himself as much.

Ex Output:
a

Ex Input:
Title: The Flu. Sentence 1: Erica woke up one morning not feeling well. Sentence 2: She had a runny nose and her muscles hurt. Sentence 3: She went to the doctor and he told her she had the flu. Sentence 4: She went and got medicine and orange juice. Choices: a. She began to feel better in a couple days. b. The milk was spilling everywhere ruining everything.

Ex Output:
a

Ex Input:
Title: Allen the Poet. Sentence 1: Allen thought he was a very talented poet. Sentence 2: He attended college to study creative writing. Sentence 3: In college, he met a boy named Carl. Sentence 4: Carl told him that he wasn't very good. Choices: a. Because of this, Allen swore off poetry forever. b. So their mom had scrambled eggs instead.

Ex Output:
a