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 on a scaffold paints a wall with a paint roller.
Hypothesis: A man is painting a picture.
Update: He looks thoughtfully at his work then reaches for another roller in a tray with a different color of paint.
Example Output: strengthener

Example Input: Premise: Women dressed in theme costumes dance in a circle before an outdoor crowd.
Hypothesis: Women are celebrating Halloween.
Update: It is the month of may.
Example Output: weakener

Example Input: Premise: A baby and 2 year old laying on the ground under a play mobile.
Hypothesis: Two siblings play with a mobile toy.
Update: They are having a play date.
Example Output:
weakener