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: An old man is sitting on a stoop while people walk towards him with groceries.
Hypothesis: A man sits enjoying the weather, as shoppers stroll by with groceries.
Update: The old man is wearing a sweater, overcoat, scarf and mittens.

Ex Output:
strengthener


Ex Input:
Premise: Man with no shirt and woman wearing all black are running in the sand.
Hypothesis: The people are at the beach.
Update: They are running to a cactus.

Ex Output:
weakener


Ex Input:
Premise: A man is looking through a telescope with the moon shining in the background.
Hypothesis: The moon is visible.
Update: The man is pointing the telescope camera to the sun

Ex Output:

weakener