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: A man wearing black gloves is placing some food items out to be sold.
Hypothesis: A man selling food works for a restuarant.
Update: He is wearing a chef's hat.
Example Output: strengthener

Example Input: Premise: Black man working on a plywood stage.
Hypothesis: A man is cleaning the theater
Update: The man is holding a mop next to a bucket of soapy water.
Example Output: strengthener

Example Input: Premise: A woman with black hair and a red plaid apron preparing food.
Hypothesis: A woman is getting dinner ready.
Update: There is a casserole dish full in the oven.
Example Output:
strengthener