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.

Input: Consider Input: Premise: PersonX immediately ran
Hypothesis: As a result, PersonX feels athletic
Update: PersonX feels muscles building.

Output: strengthener


Input: Consider Input: Premise: PersonX gives under PersonY hand
Hypothesis: PersonX is seen as defeated
Update: Person X was using Person Y's momentum against them.

Output: weakener


Input: Consider Input: Premise: PersonX plays PersonY role
Hypothesis: PersonX then discovers skill didnt know he had
Update: PersonX had never been in a musical before.


Output: strengthener