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: The black dog is by a soccer ball and the brown dog is running.
Hypothesis: Two dogs are playing together on a soccer field.
Update: The dogs are playing in their backyard.

Ex Output:
weakener


Ex Input:
Premise: A cubby cheeked baby in a yellow and red bib playing with a toy.
Hypothesis: The baby loves playing with toys.
Update: The baby only has one toy.

Ex Output:
weakener


Ex Input:
Premise: Black cow jumping a fence in the snow as a dog barks and another cow watches.
Hypothesis: The cow and dog are best friends.
Update: The cow seems happy to see the dog.

Ex Output:

strengthener