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 man wearing black sits outside under palm trees near green and blue chairs.
Hypothesis: It is sunny outside.
Update: He is glistening with tanning oil

Ex Output:
strengthener


Ex Input:
Premise: Woman is making a half smile at the camera.
Hypothesis: woman takes selfie
Update: The camera is on the woman's phone.

Ex Output:
strengthener


Ex Input:
Premise: A man wrapped in a flag walks down the street.
Hypothesis: the man is very patriotic
Update: The flag is the US Flag.

Ex Output:

strengthener