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: two girls wearing a yellow shirt, one wearing a green shirt, and the last wearing a pink are each looking to the side
Hypothesis: Girls are looking at a sign on the wall.
Update: They all have a crush on the boy walking by.

Output: weakener


Input: Consider Input: Premise: Man walking little girl with backpack across street.
Hypothesis: The man is the girl's father.
Update: The man kisses the girl on the cheek.

Output: strengthener


Input: Consider Input: Premise: A middle-aged man talking to his daughter and playing with his grandchild.
Hypothesis: The man has just gotten out of surgery, and his daughter and grandchild have come to visit him in his recovery room
Update: The man has tubes in his hand.


Output: strengthener