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: A bright wall painting on the street.
Hypothesis: A mural of a sunset.
Update: The colors are beautiful in red and gold.
Example Output: strengthener

Example Input: Premise: The woman is holding a camera and standing on a brick wall.
Hypothesis: The woman is on the wall finding the right angle for a photo.
Update: The camera is attached to a tripod.
Example Output: weakener

Example Input: Premise: A dark-haired bearded man in a white dress shirt and black sweater and a woman in a black and white dress in a small space.
Hypothesis: The man and woman are related.
Update: The man and woman are husband and wife.
Example Output:
strengthener