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 is best friends
Hypothesis: PersonX then smiles
Update: PersonX's friend hit them.

Output: weakener


Input: Consider Input: Premise: PersonX belongs to PersonY group
Hypothesis: As a result, PersonX feels team spirited
Update: Person X is high fiving everyone in the group.

Output: strengthener


Input: Consider Input: Premise: PersonX fails PersonX's classes
Hypothesis: As a result, PersonX feels anger
Update: PersonX lost their scholarship


Output: strengthener