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 is best friends
Hypothesis: PersonX then smiles
Update: PersonX's friend hit them.
Example Output: weakener

Example Input: Premise: PersonX derives PersonY's powers from the consent
Hypothesis: PersonX is seen as powerful
Update: Person X is a judge.
Example Output: strengthener

Example Input: Premise: PersonX raises the money
Hypothesis: As a result, PersonX feels charitable
Update: PersonX donates it
Example Output:
strengthener