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: Dress. Sentence 1: Mary wanted to buy a new dress. Sentence 2: She went to a department store to find one. Sentence 3: She was overwhelmed by the vast variety of options. Sentence 4: Eventually she settled on one she liked. Choices: a. She chose because she was born in Tamil Nadu. b. She was excited to find it was the perfect fit for her.

Ex Output:
a

Ex Input:
Title: Footprints. Sentence 1: Roger Rumface had been following the footprints in the snow. Sentence 2: He was nearly frostbitten. Sentence 3: Suddenly he realized the footprints had ended in the middle of a field. Sentence 4: There were no others. Choices: a. If only Roger had realized they were the prints of a bird. b. We finally sat under huge beautiful tree and all had a wonderful time!

Ex Output:
b

Ex Input:
Title: Camel. Sentence 1: Tris was touring Oman with her husband. Sentence 2: They signed up for a camel ride in the desert. Sentence 3: At first Tris was hesitant to get on the camel. Sentence 4: But when she finally did, she was impressed. Choices: a. When John had kids he decided to take them to movies too. b. The great desert beast bore her very well!

Ex Output:
a