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. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.

Ex Input:
Premise: PersonX eats vegetables
Hypothesis: Because PersonX wanted to satisfy his hunger
Update: PersonX hasn't eaten all day.

Ex Output:
strengthener


Ex Input:
Premise: PersonX gives PersonY something
Hypothesis: Before, PersonX needed pay for the gift
Update: PersonX knits a wool hat.

Ex Output:
weakener


Ex Input:
Premise: PersonX rests PersonY's head
Hypothesis: Before, PersonX needed to have personY fall asleep on them
Update: PersonY isn't feeling well.

Ex Output:

weakener