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.

Example Input: Title: Scout and the Neighbors. Sentence 1: Scout was a tiny puppy who loved to meet new people. Sentence 2: She loved her next door neighbors most of all. Sentence 3: On a walk one day she slipped out of her collar to go see them. Sentence 4: The house was empty, but the garage was open. Choices: a. She ran inside, and Norm gave her a big smile and plenty of pats. b. The teachers loved his idea because the trees would last forever.
Example Output: b

Example Input: Title: The Sprinkler. Sentence 1: A father and his daughter were walking to school one morning. Sentence 2: Their journey took them past many houses with pretty front yards. Sentence 3: They stopped to look at some nice flowers in one of the yards. Sentence 4: Suddenly a sprinkler came on and soaked them both! Choices: a. She used it every day. b. They had to turn back and dry off at home before heading out again!
Example Output: a

Example Input: Title: The Racer. Sentence 1: Jana is the fastest girl runner in her class. Sentence 2: She challenged the fastest boy runner in her class to a race. Sentence 3: He agreed to the challenge. Sentence 4: During the race Jana tripped and injured her leg. Choices: a. Lazlo quickly dove back out the window. b. The boy won the race.
Example Output:
a