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.

Ex Input:
Title: No callback. Sentence 1: Allie wanted to be in the school play. Sentence 2: So she auditioned for the lead. Sentence 3: Allie did not end up with a part. Sentence 4: It made her sad. Choices: a. Nick was glad when he was able to afford a new car. b. She ended up crying.

Ex Output:
a

Ex Input:
Title: Long Lines. Sentence 1: Jude needed to go to the store to get a loaf of bread. Sentence 2: He went to the biggest chain store in town. Sentence 3: The lines were really long in the store. Sentence 4: Jude left the store and went to a smaller store down the road. Choices: a. The lines were shorter and Jude was in and out. b. John was very frustrated with his new purchase.

Ex Output:
b

Ex Input:
Title: Birds. Sentence 1: I walked onto the back patio. Sentence 2: I looked up into the blue sky filled with clouds. Sentence 3: I could hear a small bird cawing in the tree overhead. Sentence 4: I looked into the tree, trying to find it. Choices: a. My dog ran out barking, and scared it away. b. He really enjoyed riding on the train.

Ex Output:
b