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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.
Input: Title: The Tantrum. Sentence 1: Tony took his son to the toy store. Sentence 2: His son wanted an expensive toy. Sentence 3: Tony told the boy he couldn't have it. Sentence 4: His son began having a tantrum. Choices: a. I confirmed that my friend was crazy for liking the disgusting treat. b. Tony took his son out the son without buying him anything.
Output:
a