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 woman is looking out the window.
Hypothesis: The woman is enjoying the view outside.
Update: The window looks out onto a flower-filled meadow.

Ex Output:
strengthener


Ex Input:
Premise: There are three people on the dock by the boats.
Hypothesis: Three people prepare for a fishing trip.
Update: The people are wearing search and rescue gear

Ex Output:
weakener


Ex Input:
Premise: a group posing with SpongeBob for a picture.
Hypothesis: SpongeBob and friends take picture during vacation.
Update: Their selfie sticks are automatic.

Ex Output:

strengthener