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: A snowboarder clothed in red is in the middle of a jump from a snowy hill.
Hypothesis: A snowboarder clothed in red is in the middle of a jump from a snowy hill during a competition.
Update: There is a judging panel beside the slope.
Example Output: strengthener

Example Input: Premise: 4 Firefighters using a fire hose to put out a fire.
Hypothesis: Firefighters are enveloped by smoke from the burning house.
Update: The firefighters are barely visible.
Example Output:
strengthener