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 enjoys the meal
Hypothesis: Before, PersonX needed to buy some food
Update: PersonX thanks their sibling for preparing the birthday meal.

Ex Output:
weakener


Ex Input:
Premise: PersonX gives it to PersonY's mother
Hypothesis: As a result, PersonX feels generous
Update: PersonY's mother is angry afterward.

Ex Output:
weakener


Ex Input:
Premise: PersonX cries in PersonX's beer
Hypothesis: Before, PersonX needed to have a reason to cry
Update: PersonX is not know for crying.

Ex Output:

strengthener