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: Five students are reading off a piece of paper.
Hypothesis: the students are practicing for  a test
Update: The paper is a note from another student.
Example Output: weakener

Example Input: Premise: Woman is making a half smile at the camera.
Hypothesis: woman takes selfie
Update: The camera is on the woman's phone.
Example Output: strengthener

Example Input: Premise: Several people, including a man in a blue shirt and two women wearing black, acquire food from a buffet table.
Hypothesis: Several people are overloading their plates with food.
Update: The people want to show their appreciation for the food
Example Output:
strengthener