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 climbs the mountain
Hypothesis: As a result, PersonX feels strong
Update: PersonX jumps for joy
Example Output: strengthener

Example Input: Premise: PersonX lays on PersonY's bed
Hypothesis: Because PersonX wanted to rest on his bed
Update: It is night
Example Output: strengthener

Example Input: Premise: PersonX wants to have a child
Hypothesis: As a result, PersonX wants to teach the child
Update: PersonX is homeschooling the child.
Example Output:
strengthener