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 man sawing wood on a fence.
Hypothesis: It's sunny outside while a man is cutting wood.
Update: The man is wearing a visor and sunglasses.
Example Output: strengthener

Example Input: Premise: A woman serving a tennis ball.
Hypothesis: A woman is playing tennis with her husband.
Update: She has a basket of balls to practice with alone.
Example Output: weakener

Example Input: Premise: A man talking to a woman who is laughing.
Hypothesis: a man is telling yo momma jokes to the woman
Update: The man is crying.
Example Output:
strengthener