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 scrambles eggs
Hypothesis: Before, PersonX needed to buy eggs
Update: Person X says to his wife 'Thanks for getting these at the store!'
Example Output: strengthener

Example Input: Premise: PersonX is going to win
Hypothesis: Before, PersonX needed practice
Update: They have been playing for years
Example Output: strengthener

Example Input: Premise: PersonX teases PersonY
Hypothesis: Because PersonX wanted to make person Y feel bad
Update: PersonX and PersonY are best friends.
Example Output:
weakener