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.

[Q]: Premise: PersonX learns to cook
Hypothesis: Then, he knows how to cook
Update: Person X has a culinary degree on his wall.
[A]: strengthener


[Q]: Premise: PersonX pets the cat
Hypothesis: Before, PersonX needed hold the cat
Update: The cat is very shaky
[A]: strengthener


[Q]: Premise: PersonX walks towards the door
Hypothesis: PersonX is seen as good
Update: PersonX is opening the door for guests.
[A]:
strengthener