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 looks after PersonX's children
Hypothesis: Before, PersonX needed to work with his/her spouse
Update: PersonX is divorced.
Example Output: weakener

Example Input: Premise: PersonX loses control of PersonX's bike
Hypothesis: As a result, PersonX feels careless
Update: PersonX laughs it off and doesn't blame themselves.
Example Output: weakener

Example Input: Premise: PersonX needs a vacation
Hypothesis: Before, PersonX needed make a plan
Update: X needs to apply to use his vacation time at work.
Example Output:
strengthener