Definition: 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.
Input: Title: Kelly's Cat. Sentence 1: Kelly had a black kitten when she was younger. Sentence 2: She loved the kitten more than anything. Sentence 3: As Kelly grew up, so did the kitten. Sentence 4: When Kelly was 18 years old, the kitten (now a cat) became sick. Choices: a. She checked and realized the wrong cord was plugged into the socket. b. The cat passed away and Kelly felt like she lost her best friend.
Output:
a