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 watches PersonY play
Hypothesis: As a result, PersonX wants to bath PersonY
Update: PersonX did not turn on the bath water.
Example Output: weakener

Example Input: Premise: PersonX sells the car
Hypothesis: PersonX is seen as happy
Update: The car is an heirloom
Example Output: weakener

Example Input: Premise: PersonX accidentally tripped
Hypothesis: PersonX is seen as embarrassed
Update: PersonX did it in front of a large crowd.
Example Output:
strengthener