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 leads PersonY army
Hypothesis: As a result, PersonX feels respected
Update: PersonY forced PersonX to lead the army.
Example Output: weakener

Example Input: Premise: PersonX sets a trap
Hypothesis: As a result, PersonX feels aggressive
Update: PersonX is a serial murderer
Example Output: strengthener

Example Input: Premise: PersonX finds PersonY one
Hypothesis: Before, PersonX needed to search for it
Update: PersonY has strange tastes
Example Output:
strengthener