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 blond little boy is standing by a fence.
Hypothesis: The boy is waiting for his friends to come over.
Update: he is waving to boys walking towards him.

Output: strengthener


Input: Consider Input: Premise: A white-haired older man in a green striped shirt is conducting in the social sciences building.
Hypothesis: A white-haired older man in a green striped shirt and black pants is conducting in the social sciences building.
Update: The man is dressed in semi-formal clothing.

Output: strengthener


Input: Consider Input: Premise: Three men are working up fish on a stainless steel table outdoors right next to the water.
Hypothesis: Three men are preparing the fish they had caught earlier in the day.
Update: The men are wearing chefs aprons standing in front of a group of diners


Output: weakener