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 person is riding a red motorcycle around a track.
Hypothesis: people are racing dirt bikes
Update: The person is being filmed by news cameras
Example Output: strengthener

Example Input: Premise: A man is swinging on a rope above the water.
Hypothesis: A man pretends to be Tarzan as he swings around.
Update: The man holds the rope with two hands.
Example Output: weakener

Example Input: Premise: A woman in a hi-viz jacket is smiling at person carrying a stop sign in front of a crane.
Hypothesis: A woman is helping to direct traffic near a construction site.
Update: An advertisement banner is flying from the crane.
Example Output:
weakener