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.

Example Input: Premise: Black man working on a plywood stage.
Hypothesis: A man is cleaning the theater
Update: The man is holding a mop next to a bucket of soapy water.
Example Output: strengthener

Example Input: Premise: A man in black is talking into the microphone.
Hypothesis: The man is a singer.
Update: The man is in an announcing booth.
Example Output: weakener

Example Input: Premise: A boy belly-surfing a skateboard into a pile of autumn leaves.
Hypothesis: The boy belly-surfing is asian.
Update: The boy has olive white skin.
Example Output:
strengthener