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 gets tired
Hypothesis: PersonX is seen as sluggish
Update: PersonX moves very slowly.
Example Output: strengthener

Example Input: Premise: PersonX gives PersonY death
Hypothesis: PersonX then went sell
Update: PersonX would forever keep his mother's ring as a reminder
Example Output: weakener

Example Input: Premise: PersonX sweeps the floor
Hypothesis: Before, PersonX needed to get the broom out of the closet
Update: The broom is kept next to the refrigerator.
Example Output:
weakener