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 young girl wearing a yellow soccer jersey is running on a field.
Hypothesis: A girl is running to chase a soccer ball during a game.
Update: The field is full of children in street clothes.

Ex Output:
weakener


Ex Input:
Premise: A young african boy skipping rocks.
Hypothesis: There is a rock currently skipping down a pond.
Update: There are several expanding sets of rings on the surface of the pool.

Ex Output:
strengthener


Ex Input:
Premise: A factory worker uses an automated saw to slice through an object.
Hypothesis: A factory worker uses an automated saw to slice through an object for the tenth time today.
Update: He job involves a lot of repetition.

Ex Output:

strengthener