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 swings open
Hypothesis: Before, PersonX needed to be outside
Update: They are getting rained on

Ex Output:
strengthener


Ex Input:
Premise: PersonX meets PersonY's friends
Hypothesis: PersonX then is rejected
Update: PersonY's friends invite PersonX to join their club.

Ex Output:
weakener


Ex Input:
Premise: PersonX drinks with the flies
Hypothesis: As a result, PersonX feels dirty
Update: PersonX is well dressed

Ex Output:
strengthener