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 baby sleeping with a green Binky in its mouth.
Hypothesis: A baby is in a crib.
Update: The baby monitor blinks on the nearby dresser in the nursery.

Ex Output:
strengthener


Ex Input:
Premise: Two boys walking down the street, with one giving a peace sign.
Hypothesis: A boy is giving his friend the peace sign as they walk down the street.
Update: The boys are on their way to an anti-war rally.

Ex Output:
strengthener


Ex Input:
Premise: A group of young people having fun and dancing.
Hypothesis: People are dancing at a party.
Update: The people are wearing birthday hats.

Ex Output:

strengthener