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 hits the bricks
Hypothesis: As a result, PersonX feels worn out
Update: PersonX has had a lot of caffeine.
Example Output: weakener

Example Input: Premise: PersonX sees the car
Hypothesis: As a result, PersonX feels venturing
Update: They want to buy the car
Example Output: strengthener

Example Input: Premise: PersonX has seen PersonX's day
Hypothesis: PersonX then is slower than before
Update: They drank a bunch of coffee
Example Output:
weakener