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.

Input: Consider Input: Premise: PersonX closes it behind PersonY
Hypothesis: Before, PersonX needed to grab what needs to be closed.
Update: PersonX used the door handle.

Output: strengthener


Input: Consider Input: Premise: PersonX plans a party
Hypothesis: Because PersonX wanted be around people
Update: PersonX is being paid by a client

Output: weakener


Input: Consider Input: Premise: PersonX buys an expensive car
Hypothesis: Before, PersonX needed select a car model
Update: PersonX had narrowed their choice down to three models.


Output: strengthener