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 knows PersonX's value
Hypothesis: PersonX is seen as happy
Update: PersonX smiles joyously

Ex Output:
strengthener


Ex Input:
Premise: PersonX cries in pain
Hypothesis: Because PersonX wanted relief
Update: PersonX is acting in a play.

Ex Output:
weakener


Ex Input:
Premise: PersonX cooks dinner for PersonY's girlfriend
Hypothesis: Before, PersonX needed gather food
Update: X consulted a recipe.

Ex Output:
strengthener