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: Title: Marcus Buys Khakis. Sentence 1: Marcus needed clothing for a business casual event. Sentence 2: All of his clothes were either too formal or too casual. Sentence 3: He decided to buy a pair of khakis. Sentence 4: The pair he bought fit him perfectly. Choices: a. Marcus was happy to have the right clothes for the event. b. He left in a huff for having his ideas mocked.
Example solution: b
Example explanation: Marcus is buying clothes for a business event and not presenting an idea.

Problem: Title: Coconut oil. Sentence 1: Cortana didn't like brushing her hair. Sentence 2: Sometimes she wouldn't brush it for days. Sentence 3: Eventually her hair got so tangled that it looked like a birds nest! Sentence 4: She heard that using coconut oil would help to detangle it. Choices: a. Two people were trampled in the evacuation. b. After one whole bottle of coconut oil her hair is now detangled.
Solution: a