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.

Example 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.
Example Output: strengthener

Example Input: Premise: A woman is sitting on a man's lap in a chair.
Hypothesis: The man is in love with the woman sitting on his lap.
Update: The woman is the man's wife.
Example Output: strengthener

Example Input: Premise: An older man wearing glasses, clad in beautiful fabric studies ornate objects.
Hypothesis: An antique curator wearing period garb is checking out other objects from the era.
Update: The old man is stressed very stylishly for his age.
Example Output:
weakener