In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Example Input: Premise: A pipe with one hand on it.
Hypothesis: The pipe is broken.
Update: The pipe was as good as new.
Example Output: weakener

Example Input: Premise: A young man goes air-born while his skateboard spins underneath him.
Hypothesis: The man is not wearing a helmet.
Update: His hair is flying in front of his face.
Example Output: strengthener

Example Input: Premise: A baseball player with the number seven on his back swings the bat and is preparing to run, as other players watch the ball fly away.
Hypothesis: the player will make a home run
Update: The ball is flying in a high arc nearly straight up.
Example Output:
weakener