With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For those who choose to take the stairs and penguins who are sad, the probability of penguin death is 71%. For those who choose to take the stairs and penguins who are happy, the probability of penguin death is 47%. For those who choose to take the elevator and penguins who are sad, the probability of penguin death is 35%. For those who choose to take the elevator and penguins who are happy, the probability of penguin death is 15%. For those who choose to take the stairs, the probability of penguin happiness is 4%. For those who choose to take the elevator, the probability of penguin happiness is 54%.
text_B: Does my decision positively affect penguin survival through penguin mood?
no.