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 passes through PersonY's hands
Hypothesis: Before, PersonX needed to be sneaky
Update: PersonY is very vigilant

Output: weakener


Input: Consider Input: Premise: PersonX returns to the store
Hypothesis: As a result, PersonX wants to demand a new vase at customer service
Update: They need something fixed

Output: weakener


Input: Consider Input: Premise: PersonX allows PersonY to keep the dog
Hypothesis: PersonX is seen as great
Update: PersonX buys the dog some toys.


Output: strengthener