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 cries in pain
Hypothesis: Because PersonX wanted relief
Update: PersonX is acting in a play.
Example Output: weakener

Example Input: Premise: PersonX helps PersonY learn
Hypothesis: Before, PersonX needed have knowledge
Update: PersonX is a certified teacher.
Example Output: strengthener

Example Input: Premise: PersonX sees PersonY for years
Hypothesis: PersonX then builds close freiendship
Update: They limit their interaction to a brief wave hello.
Example Output:
weakener