You will be given a definition of a task first, then some input of the task.
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.

Title: Hummingbird Day. Sentence 1: The hummingbirds visited the feeder all day long. Sentence 2: Even though there were 4 drinking spots, they didn't share. Sentence 3: Being very territorial, they chased each other away. Sentence 4: One day, they fought each other until they were down to ground level. Choices: a. It was amazing to see! b. He knew his job depended on a good performance.
Output:
b