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.

Input: Consider Input: Premise: Two young men in a purple and white shirt running on grass.
Hypothesis: Two young men are playing tag.
Update: The men have frisbees.

Output: weakener


Input: Consider Input: Premise: A young boy dives to catch the ball during a baseball game.
Hypothesis: A young boy and his teammate both dive to catch a ball during the game.
Update: The boys collide and end up not even catching the ball.

Output: strengthener


Input: Consider Input: Premise: A small white dog rolls over on the grass.
Hypothesis: A dog is playing on the grass.
Update: A tired dog is resting on the grass.


Output: weakener