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 enjoys every minute
Hypothesis: PersonX then rests after dancing his heart out
Update: PersonX is wearing sensible shoes

Output: strengthener


Input: Consider Input: Premise: PersonX leads PersonY army
Hypothesis: As a result, PersonX feels respected
Update: PersonY forced PersonX to lead the army.

Output: weakener


Input: Consider Input: Premise: PersonX shifts in PersonY's seat
Hypothesis: As a result, PersonX wants to have him closer to him
Update: X finds Y irresistable.
Output: strengthener