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: Cheerleaders are performing on a football field.
Hypothesis: Cheerleaders are performing on AstroTurf.
Update: Two of the cheerleaders have rug burns on their knees from the AstroTurf.
[EX A]: strengthener

[EX Q]: Premise: An icy, snowy city street with a bike resting against a pole.
Hypothesis: The bike is covered in snow.
Update: There are fresh tire track behind the bike.
[EX A]: weakener

[EX Q]: Premise: Lady in a kitchen wearing a black scarf and making sushi by hand.
Hypothesis: A lady is making California roll sushi.
Update: The lady is cutting up salmon for the sushi.
[EX A]:
weakener