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: Bikers stopped on a road.
Hypothesis: Biker men sitting on bikes conversing.
Update: The bikers are sitting on the road but not even looking at each other.

Ex Output:
weakener


Ex Input:
Premise: Two swimmers competing in swim competition.
Hypothesis: The swim competition is held inside
Update: The swimmers swim under some bright lights on the ceiling.

Ex Output:
strengthener


Ex Input:
Premise: A man in dark clothes leaning off of a building entrance with upraised arms.
Hypothesis: A man is waiting for a friend.
Update: He is on break at work.

Ex Output:

weakener