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 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.

Title: Ice Cream Samples. Sentence 1: Bill and Joe went to the ice cream parlor. Sentence 2: Joe couldn't decide what he wanted. Sentence 3: He tried six different samples. Sentence 4: Then he realized he wasn't hungry anymore. Choices: a. The server at the ice cream parlor was very annoyed with him. b. Ricky and his dog went for a run in the park afterwards.
Output:
b