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 is great friends
Hypothesis: PersonX is seen as happy
Update: Person X is smiling big and laughing a lot.

Ex Output:
strengthener


Ex Input:
Premise: PersonX pays PersonX's debts
Hypothesis: Before, PersonX needed relationship with PersonY
Update: PersonX send the money to the debt collector, PersonY.

Ex Output:
weakener


Ex Input:
Premise: PersonX falls off the back of a truck
Hypothesis: As a result, PersonX feels unaware
Update: PersonX's head hit the concrete

Ex Output:

strengthener