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 remodels PersonX's bathroom
Hypothesis: Before, PersonX needed to buy supplies
Update: PersonX puts a hammer in their shopping cart.
Example Output: strengthener

Example Input: Premise: PersonX keeps mum
Hypothesis: As a result, PersonX feels secretive
Update: They are guilty
Example Output: strengthener

Example Input: Premise: PersonX wants to impress PersonY
Hypothesis: Before, PersonX needed to approach PersonY
Update: PersonY doesn’t know who X is
Example Output:
weakener