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 depends upon the presence
Hypothesis: PersonX is seen as dependent
Update: Everyone knows that PersonX has depended on the presence for a long time.
Example Output: strengthener

Example Input: Premise: PersonX makes a basket
Hypothesis: PersonX then carries
Update: They don’t know how to dribble a ball
Example Output: strengthener

Example Input: Premise: PersonX makes PersonY experiment
Hypothesis: Because PersonX wanted to open persony's eyes
Update: PersonY is experimenting with psychedelics.
Example Output:
strengthener