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: An African American man smiling.
Hypothesis: The man is showing his teeth to a doctor.
Update: The man is knocking on a door

A: weakener
****
Q: Premise: Older men look out over a balcony.
Hypothesis: Older men are looking at the scenery.
Update: The balcony overlooks a stream and wildlife in the Montana mountains.

A: strengthener
****
Q: Premise: A man with a red shirt and white shorts is walking near a man with a white shirt and black pants down a busy street.
Hypothesis: Two men are walking to work.
Update: The time is currently 6 pm.

A:
weakener
****