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.

Input: Consider Input: Premise: A group of chefs are cooking at a barbecue restaurant.
Hypothesis: Chefs cooking steak at a barbecue restaurant.
Update: The main dish on the menu is filet mignon.

Output: strengthener


Input: Consider Input: Premise: A crowd of people are holding signs and protesting against school cuts.
Hypothesis: A crowd of people chanting.
Update: A crowd of students and teachers chanting, "No layoffs."

Output: strengthener


Input: Consider Input: Premise: A woman in black pants is looking at her cellphone.
Hypothesis: a younger woman is looking at her phone
Update: The woman has gray hair and glasses.


Output: weakener