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: Cheerleaders perform.
Hypothesis: The Cheerleaders are shaking their pom poms
Update: The cheerleaders did a gymnastics routine.
Example Output: weakener

Example Input: Premise: Two girls in red and blowing bubbles with gum.
Hypothesis: One child has challenged another to blow the biggest bubble.
Update: The girls are carefully controlling their breathing to make the bubbles bigger.
Example Output: strengthener

Example Input: Premise: A crowded busy dock with people standing next to a freight car either loading or unloading it.aa.
Hypothesis: A crowded dock has people on it standing next to a freight car because the car is late for it's next unloading.
Update: The people looked at their watches expectantly.
Example Output:
strengthener