Definition: 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: Title: Temperamental car. Sentence 1: Olivia hopped into her car and put the key in the ignition. Sentence 2: She turned the key and nothing happened. Sentence 3: She tried again and the car did not start! Sentence 4: Olivia called her dad who agreed to stop by later to check on the car. Choices: a. Her dad started up the car without a hitch and decided it was a fluke. b. The water was so cold, I had to get out.
Output:
a