Instructions: 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: Does Sex Enervate. Sentence 1: Jason entered the kick-boxing ring with confidence. Sentence 2: But his punches and kicks didn't hurt his opponent. Sentence 3: His opponent landed punches and kicks that made Jason fall. Sentence 4: Jason lost the match in the third round but had an excuse. Choices: a. He said he had sex last night and was enervated. b. Then she noticed the shelf was in the kid's section.
Output:
a