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 Q]: Premise: Two boys playing on a trampoline.
Hypothesis: Two boys playing chess on a trampoline.
Update: There is a checkered board on top of the trampoline.
[EX A]: strengthener

[EX Q]: Premise: A woman with gray hair, a brown hat, sunglasses, and a yellow scarf is looking away from the camera.
Hypothesis: The woman hates having her picture taken.
Update: She's looking in her bag for another hat to model.
[EX A]: weakener

[EX Q]: Premise: A man in a black shirt is riding a mule trough the desert, with the sun shining in the background.
Hypothesis: The man owns the mule.
Update: The man borrowed the mule from his neighbor.
[EX A]:
weakener