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.

Input: Consider Input: Premise: Dancers a standing on a sidewalk.
Hypothesis: Some dancers are waiting for the bus.
Update: The dancers are headed on a tour.

Output: strengthener


Input: Consider Input: Premise: A cubby cheeked baby in a yellow and red bib playing with a toy.
Hypothesis: The baby loves playing with toys.
Update: The baby only has one toy.

Output: weakener


Input: Consider Input: Premise: Two guys are wearing matching uniforms.
Hypothesis: Two sad guys are wearing matching uniforms.
Update: The guys are laughing hysterically.


Output: weakener