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 feels good about PersonY's decision
Hypothesis: As a result, PersonX feels proud
Update: PersonY decided to go to PersonX'a alma mater.

Output: strengthener


Input: Consider Input: Premise: PersonX looks up at PersonY
Hypothesis: Because PersonX wanted looks up
Update: PersonY is violently grabbing PersonX's chin.

Output: weakener


Input: Consider Input: Premise: PersonX gives it to PersonY's son
Hypothesis: PersonX is seen as generous
Update: It is Christmas Day


Output: strengthener