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: A boy standing next to a small field fire and a boy running away from it.
Hypothesis: The boy is running from the field fire to get help.
Update: The is waving his hands and yelling.

Ex Output:
strengthener


Ex Input:
Premise: A woman concentrates on the device in her hand in the midst of a crowded establishment all lit in purple.
Hypothesis: a woman doing work in a crowd
Update: A woman wears a security jacket.

Ex Output:
strengthener


Ex Input:
Premise: A referee on rollerskates and wearing knee pads and a helmet is sweeping the floor of a wooden basketball court in front of a crowd.
Hypothesis: Fans watch as a ref officiates a roller derby game.
Update: The girls are ready to go.

Ex Output:

strengthener