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.

Input: Consider Input: Premise: PersonX meets PersonY's friends
Hypothesis: PersonX then is rejected
Update: PersonY's friends invite PersonX to join their club.

Output: weakener


Input: Consider Input: Premise: PersonX starts coughing
Hypothesis: Before, PersonX needed sitting on chair
Update: They had to see the doctor

Output: strengthener


Input: Consider Input: Premise: PersonX changes PersonY clothes
Hypothesis: As a result, PersonX wants y to get undressed
Update: They are horny
Output: strengthener