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 passes through PersonY's hands
Hypothesis: Before, PersonX needed to be sneaky
Update: PersonY is very vigilant

Output: weakener


Input: Consider Input: Premise: PersonX takes care of business
Hypothesis: As a result, PersonX feels independent
Update: X followed his wife's order to do so.

Output: weakener


Input: Consider Input: Premise: PersonX sees PersonX's house
Hypothesis: PersonX then notices the door open
Update: Someone walks out of the house and waves at PersonX.


Output: strengthener