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 follows PersonY closely
Hypothesis: Because PersonX wanted to learn form the best
Update: PersonY is training PersonX
Example Output: strengthener

Example Input: Premise: PersonX ignores the warning
Hypothesis: As a result, PersonX wants to turn back the hands of time!
Update: Everything is destroyed
Example Output: strengthener

Example Input: Premise: PersonX rides PersonY's motorcycle
Hypothesis: Before, PersonX needed gets a license
Update: PersonX is wearing lots of safety gear
Example Output:
strengthener