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: A young boy hanging on a pole smiling at the camera.
Hypothesis: The young boy is hispanic.
Update: The young boy has blond hair and blue eyes and speaks with a Swedish accent.

A: weakener
****
Q: Premise: Man slightly bent over has child's toy stuck between his legs.
Hypothesis: The man stuck the toy between his legs.
Update: the man attempts to remove it

A:
strengthener
****