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.

Ex Input:
Premise: A barefoot young boy glances at the camera while swinging in a park.
Hypothesis: Billy loves to swing high while his Dad pushes him.
Update: The boy's face is covered in tears.

Ex Output:
weakener


Ex Input:
Premise: Two men playing ultimate Frisbee.
Hypothesis: Two guys are playing with a yellow Frisbee.
Update: The frisbee matches some tulips under a tree.

Ex Output:
strengthener


Ex Input:
Premise: Man looks through light microscope at a glass slide.
Hypothesis: The man is looking through the microscope as part of scientific research.
Update: The microscope is in a museum.

Ex Output:

weakener