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 checks PersonX's pockets
Hypothesis: PersonX then thinks about what to buy
Update: PersonX finds her wallet.

Output: strengthener


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

Output: strengthener


Input: Consider Input: Premise: PersonX studies every night
Hypothesis: Before, PersonX needed to have a lesson to learn
Update: They just started the class
Output: strengthener