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.

Ex Input:
Premise: A brown dog chases a blond one in the grass.
Hypothesis: A person watches a one dog chase another.
Update: The blonde dog ran toward the pet door leading into the kitchen.

Ex Output:
weakener


Ex Input:
Premise: A black and white dog is playing with a large brown cow.
Hypothesis: A dog is let loose on a farm and goes up to a cow wanting to play.
Update: The dog is excited and starts to pet the cow

Ex Output:
strengthener


Ex Input:
Premise: A woman in a tomato-colored jogging suit carries both a red purse and a navy blue messenger bag.
Hypothesis: The purse and bag that the woman is holding are of popular brands.
Update: The woman got the items in a thrift store.

Ex Output:

weakener


