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 watches facial expressions
Hypothesis: As a result, PersonX wants to take pictures
Update: X is repulsed.
Example Output: weakener

Example Input: Premise: PersonX eats alone
Hypothesis: Before, PersonX needed to have something to eat
Update: PersonX is in a cafeteria
Example Output: strengthener

Example Input: Premise: PersonX is a good cook
Hypothesis: As a result, PersonX feels crafty
Update: PersonX knows many good cooks
Example Output:
weakener