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.

Ex Input:
Premise: A man in a tank top looks at a woman near a water sculpture.
Hypothesis: A man thinks a woman is pretty.
Update: The man is smiling.

Ex Output:
strengthener


Ex Input:
Premise: A man in a striped shirt selling green and yellow melon out of the back of a pick up.
Hypothesis: A farmer wearing his farm's logo shirt is selling fresh fruit throughout the summer harvest season.
Update: It's sunnyoutside.

Ex Output:
strengthener


Ex Input:
Premise: Two Indian children in formal costume happily performing a ritual dance.
Hypothesis: The children are wearing blue shirts.
Update: No other part of the costume is blue.

Ex Output:

weakener