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 gliding on a rope swing beside a red barn.
Hypothesis: The girl is swinging alone.
Update: The girl is calling out someone's name

Output: weakener


Input: Consider Input: Premise: A man with green glasses does a trick on his skateboard.
Hypothesis: A man is good on his skateboard.
Update: He is holding the skateboard with his feet.

Output: strengthener


Input: Consider Input: Premise: Two young men and two boys are sitting down on a boat next to an anchor and watching the water.
Hypothesis: It is a sunny day outside.
Update: The sun is not in their eyes.


Output: weakener