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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Title: Pythons taking over. Sentence 1: One day a man in Florida realized his pet python had got to big. Sentence 2: So the man released his python into the wild. Sentence 3: That python found another Python and they had a lot of baby pythons. Sentence 4: Now there are thousands of pythons in Florida. Choices: a. Farmer Ben's chickens no longer went missing. b. Alligators in Florida now fight with these Pythons.
Output:
b