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 turns PersonY's head to look at PersonY
Hypothesis: As a result, PersonX feels careless
Update: PersonX crashes into a pole.
Example Output: strengthener

Example Input: Premise: PersonX takes the bitter with the sweet
Hypothesis: Because PersonX wanted to be resigned to fate
Update: PersonX believes in God's plan.
Example Output: strengthener

Example Input: Premise: PersonX prevents PersonY from making
Hypothesis: Because PersonX wanted stop them from making something
Update: PersonX's boss ordered them to stop PersonY.
Example Output:
weakener