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 enters the classroom
Hypothesis: As a result, PersonX feels curious
Update: PersonX is attending his first college class.
Example Output: strengthener

Example Input: Premise: PersonX greets PersonY
Hypothesis: PersonX is seen as glad
Update: PersonY looks angrily at PersonX.
Example Output: weakener

Example Input: Premise: PersonX lets PersonY have it
Hypothesis: PersonX is seen as generous
Update: PersonX lets PersonY have the fresher food item.
Example Output:
strengthener