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: Three boys on a basketball court, wearing team uniforms, are attempting to reach a basketball which is not photographed but appears to be descending just out of their reach.
Hypothesis: there is a tie game
Update: The teams can't score on each other.

Ex Output:
strengthener


Ex Input:
Premise: The sky appears clear.
Hypothesis: The sky looked very clear at night.
Update: Many stars are visible.

Ex Output:
strengthener


Ex Input:
Premise: Two men fighting for the ball on a basketball court on the beach.
Hypothesis: Whoever scores the next point wins.
Update: The crowd is on its feet wondering who will make the winning score.

Ex Output:

strengthener