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 tells PersonY's family
Hypothesis: PersonX then uses gestures
Update: Person X is deaf.
Example Output: strengthener

Example Input: Premise: PersonX gives PersonY warning
Hypothesis: Because PersonX wanted to do something nice
Update: PersonX is trying to keep PersonY from getting into trouble.
Example Output: strengthener

Example Input: Premise: PersonX is playing soccer
Hypothesis: As a result, PersonX wants to continue practicing
Update: PersonX scores a goal.
Example Output:
strengthener