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 young girl does a handstand on a bed with blue sheets.
Hypothesis: A girl is practicing gymnastics on her bed.
Update: The girl has a headstand video up on YouTube that she is copying

Output: strengthener


Input: Consider Input: Premise: Three people are canoeing down a rough body of water.
Hypothesis: The people are in canoes where they shouldn't be.
Update: The people in the canoes are following the mapped plan.

Output: weakener


Input: Consider Input: Premise: A man wearing a jersey with the number 13 on it is ready to bat at a ball while people in the stands look on.
Hypothesis: A man with jersey number 13 is in the middle of a baseball game.
Update: The bat is flattened.


Output: weakener