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.

Example Input: Premise: PersonX finds a girlfriend
Hypothesis: As a result, PersonX feels excited
Update: PersonX realizes that their girlfriend is mean.
Example Output: weakener

Example Input: Premise: PersonX knows PersonX's value
Hypothesis: PersonX is seen as happy
Update: PersonX smiles joyously
Example Output: strengthener

Example Input: Premise: PersonX takes PersonY's life
Hypothesis: As a result, PersonX wants to turn themselves in
Update: PersonX feels the pang of guilt.
Example Output:
strengthener