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: Young women practicing marshal arts in a gym.
Hypothesis: A group of women doing Tai Chi at the gym.
Update: The women are part of a class.

Ex Output:
strengthener


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 black, brown and white dogs running in green grass with ears up on heads.
Hypothesis: Some puppies are running to catch a stick.
Update: The dogs look young and playful.

Ex Output:

strengthener