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 borrows the car
Hypothesis: PersonX is seen as thankful
Update: X crashes the car.
Example Output: weakener

Example Input: Premise: PersonX talks turkey
Hypothesis: As a result, PersonX wants to grin
Update: PersonX feels silly talking to a turkey.
Example Output: strengthener

Example Input: Premise: PersonX lets PersonX's cat
Hypothesis: PersonX then develops trust
Update: PersonX's cat pees everywhere
Example Output:
weakener