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 surprises PersonX's parents
Hypothesis: Because PersonX wanted to meet his parents
Update: PersonX hasn't seen their parents in months.

Ex Output:
strengthener


Ex Input:
Premise: PersonX exercises PersonX's right
Hypothesis: Because PersonX wanted to be accepted
Update: The other protesters cheer for PersonX.

Ex Output:
strengthener


Ex Input:
Premise: PersonX clasps PersonY's hands
Hypothesis: As a result, PersonX feels calm
Update: PersonX is praying

Ex Output:

strengthener