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 person is rock climbing.
Hypothesis: A person is going high up
Update: The person is climbing up a mountain.

Output: strengthener


Input: Consider Input: Premise: A barefoot young boy glances at the camera while swinging in a park.
Hypothesis: Billy loves to swing high while his Dad pushes him.
Update: The boy's face is covered in tears.

Output: weakener


Input: Consider Input: Premise: Five men, uniformly dressed in white shirts, tie and black slacks converse at the back of an open van.
Hypothesis: Five men prepare to kidnap someone.
Update: The men are carrying guns and have face masks


Output: strengthener