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: Man carrying a tool box on a sidewalk
Hypothesis: The toolbox is red
Update: The toolbox has the man's lunch inside.

Output: weakener


Input: Consider Input: Premise: A woman in a purple blouse and big black hat strolls down the street while listening to music on her mp3 player.
Hypothesis: A woman is walking down the street on her way to work.
Update: The woman is enjoying her day off.


Output: weakener