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: Man carrying a tool box on a sidewalk
Hypothesis: The toolbox is red
Update: The toolbox has the man's lunch inside.
Example Output: weakener

Example Input: Premise: A girl jumps rope on a sidewalk.
Hypothesis: A young girl is jumping rope on a sidewalk near school.
Update: Her mother calls her inside to have supper.
Example Output: weakener

Example Input: Premise: A massive crowd at Times Square.
Hypothesis: The crowd is waiting  to see the ball drop on New Year's Eve.
Update: It is cold and Christmas decorations are up.
Example Output:
strengthener