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

Output: strengthener


Input: Consider Input: Premise: PersonX buys a new bike
Hypothesis: As a result, PersonX wants to get a helmet
Update: PersonX previous helmet is broken

Output: strengthener


Input: Consider Input: Premise: PersonX smells strange
Hypothesis: As a result, PersonX feels smelly
Update: PersonX enjoys the warm shower.
Output: weakener