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.

Input: Consider Input: Title: Hairless. Sentence 1: Cindy was obsessed with her hair. Sentence 2: And she used all sorts of hair products and dyes. Sentence 3: She was glad that her hair gave her so much attention. Sentence 4: But in her 40s, she noticed her hair started going away. Choices: a. She was devastated when she realized it were the products causing it. b. Patty ran back to the office to call the police.

Output: a

Input: Consider Input: Title: Going to Ma's House. Sentence 1: Her grandmother was finally here to pick her up. Sentence 2: Tina burst through the front door before Ma even got out the car. Sentence 3: Tina ran to her grandmother and gave her a big hug. Sentence 4: To her dismay, Tina had to wait because Me went inside. Choices: a. She went to her own bedroom to prepare for bed. b. After an hour of hellos Tina and Ma finally left for their sleepover.

Output: b

Input: Consider Input: Title: Painted Bat. Sentence 1: Andrew painted his sons bat. Sentence 2: His son swung it at a ball. Sentence 3: The paint cracked where the ball hit. Sentence 4: Andrew tried a different paint. Choices: a. The son asked for an unpainted bat. b. His golf swing improved with that advice.
Output: a