Older man wearing dark blue clothing sweeping the ground and a person wearing a red coat and carrying a green bag entering the building.
An older man is sweeping his patio while a passerby enters a building
We can't assume the person wearing a red coat was simply a passerby.
There are areas of the ground that are not part of his patio.
The older man may and could have been a janitor and therefore it would not have been his patio.