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 asks friends
Hypothesis: Because PersonX wanted to help the poor
Update: PersonX is looking for someone to take his place.
Example Output: weakener

Example Input: Premise: PersonX visits mexico
Hypothesis: PersonX then flies back home
Update: PersonX bought plane tickets there.
Example Output: strengthener

Example Input: Premise: PersonX is in a bad car accident
Hypothesis: Before, PersonX needed to be driving
Update: PersonX was the passenger in the car.
Example Output:
weakener