You will be given a definition of a task first, then some input of the task.
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.

Title: The Biggest Race. Sentence 1: Sam was sent to fat camp. Sentence 2: He was a portly child that needed to lose weight. Sentence 3: At the end of the camp there was a big race. Sentence 4: Everyone wanted to win to show they were in the best shape. Choices: a. I ran away quickly. b. Sam was able to come in first.
Output:
b