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 lady walks up the steps from a subway.
Hypothesis: The woman is walking home from the train.
Update: The sun is rising.

Output: weakener


Input: Consider Input: Premise: Two men playing ultimate Frisbee.
Hypothesis: Two guys are playing with a yellow Frisbee.
Update: The frisbee matches some tulips under a tree.

Output: strengthener


Input: Consider Input: Premise: An outdoor picnic with lots of water bottles and barbecue is taking place.
Hypothesis: The food tastes good.
Update: Everybody's plate is overflowing with food.


Output: strengthener