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 drags through the mud
Hypothesis: Because PersonX wanted to get his feet dirty
Update: PersonX's feet are bleeding.

Ex Output:
weakener


Ex Input:
Premise: PersonX knocks PersonX down with a feather
Hypothesis: Because PersonX wanted to be surprised
Update: PersonX has an angry look on their face.

Ex Output:
weakener


Ex Input:
Premise: PersonX contributes to PersonY's success
Hypothesis: PersonX then learns from helping them
Update: They have synergy.

Ex Output:
strengthener