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: Premise: Old man crafting something in his workshop.
Hypothesis: An old man is working.
Update: The man is serious and is surrounded by workers.
Example solution: strengthener
Example explanation: If the old man is serious and surrounded by workers, it is more likely that he is working.

Problem: Premise: A crowd of people with a lady with a bright orange shirt and another lady in black have their backs to the camera.
Hypothesis: People are turned away from the camera looking at a parade in the street.
Update: There is a marching band in the street.

Solution: strengthener