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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Ex Input:
Premise: two men, one with a bicycle, and a woman waiting to cross the road.
Hypothesis: The men are spies.
Update: The men have very high security clearances.

Ex Output:
strengthener


Ex Input:
Premise: A gray dog is in grass.
Hypothesis: A dog is sitting in the grass
Update: The dog's tail cannot be seen because the dog's bottom is on the ground.

Ex Output:
strengthener


Ex Input:
Premise: The man in the jacket and tie is being interviewed in a warehouse retail store by the man in blue jeans.
Hypothesis: The man is being interviewed for a management position.
Update: The man has worked in the company for a few years now.

Ex Output:

strengthener