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.

Input: Consider Input: Premise: a young man jumping a back flip off of a concrete wall.
Hypothesis: The flip is high
Update: The wall is 10 feet tall

Output: strengthener


Input: Consider Input: Premise: Two dogs on leashes straining toward each other while their owners walk away from each other.
Hypothesis: The dogs hate eachother.
Update: The two male dogs are very aggressive towards each other.

Output: strengthener


Input: Consider Input: Premise: A woman with a baby stroller is waiting to cross a street
Hypothesis: A woman and her son in a stroller are waiting to cross the street to get to the store.
Update: The woman has a list of things to buy.


Output: strengthener