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.

Example Input: Premise: A man in a tan jacket with a rather intense stare.
Hypothesis: A man is staring at someone he wants to fight
Update: the man goes over to the other man and shoves him
Example Output: strengthener

Example Input: Premise: Three people are canoeing down a rough body of water.
Hypothesis: The people are in canoes where they shouldn't be.
Update: The people in the canoes are following the mapped plan.
Example Output: weakener

Example Input: Premise: Wearing a helmet with a reindeer on it, as well as protective knee and elbow pads, a woman in the roller derby crouches and waits.
Hypothesis: Woman at skating rink with her friends
Update: The woman is outside.
Example Output:
weakener