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 meets some new people
Hypothesis: Because PersonX wanted to make friends
Update: PersonX recently moved to a new city.

Ex Output:
strengthener


Ex Input:
Premise: PersonX does n't catch any fish
Hypothesis: PersonX then starves
Update: PersonX is camping and brought nothing else to eat.

Ex Output:
strengthener


Ex Input:
Premise: PersonX calls PersonX's grandparents
Hypothesis: As a result, PersonX feels caring
Update: it's Christmas

Ex Output:
strengthener