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: A boy is doing a stunt with his skateboard.
Hypothesis: A boy is doing tricks at a skate park.
Update: The boy is in his driveway.

Output: weakener


Input: Consider Input: Premise: Two males are sitting on a dock, one of which is playing guitar, and another two are standing in front of them.
Hypothesis: Two men are creating entertainment for money.
Update: The men wear work uniforms as they play for a few minutes and head back into their workplace.

Output: weakener


Input: Consider Input: Premise: This boy, wearing a red shirt and blue shorts, is running.
Hypothesis: The boy is running in a race.
Update: The boy tries to catch up with the boy in front of him.


Output: strengthener