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 votes for the first time
Hypothesis: PersonX is seen as accomplished
Update: Their candidate won the election
Example Output: strengthener

Example Input: Premise: PersonX gives PersonY something
Hypothesis: Before, PersonX needed pay for the gift
Update: PersonX knits a wool hat.
Example Output: weakener

Example Input: Premise: PersonX takes a walk
Hypothesis: PersonX is seen as refreshed
Update: PersonX is walking through the park.
Example Output:
strengthener