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

Output: strengthener


Input: Consider Input: Premise: PersonX visits mexico
Hypothesis: PersonX then flies back home
Update: PersonX bought plane tickets there.

Output: strengthener


Input: Consider Input: Premise: PersonX visits PersonZ's family in PersonY
Hypothesis: As a result, PersonX feels friendly
Update: PersonX and PersonY don't speak to each other.


Output: weakener