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 eats more healthy food
Hypothesis: Because PersonX wanted to live longer
Update: PersonX eats a lot of fruits and vegetables.
Example Output: strengthener

Example Input: Premise: PersonX rakes over the coals
Hypothesis: PersonX then pours water on coals
Update: PersonX has to put the fire out.
Example Output: strengthener

Example Input: Premise: PersonX stops drinking soda
Hypothesis: PersonX then losses weight
Update: PersonX drinks hot chocolate instead
Example Output:
weakener