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.

Q: Premise: man in yellow shirt with USA on it sits on chair next to door
Hypothesis: A man near the door is waiting for a friend.
Update: The man is watching the door for hoodlums.

A: weakener
****
Q: Premise: A man and women dance together while a crowd looks on on a wooden surface.
Hypothesis: some people's are watching the dance performance made by a man and women
Update: The couple are dancing on the wooden surface.

A: strengthener
****
Q: Premise: An older bearded gentleman in glasses is reading a book in front of an open laptop, possibly in a classroom.
Hypothesis: A bearded gentleman in glasses is reading "Harry Potter" in front of his laptop, possibly in a classroom for first graders.
Update: The book cover shows a picture of a rabbit wearing a hat.

A:
weakener
****