A constructions site on the side of the mountain with a bulldozer digging in the ground that is all dirt
It is impossible that the bulldozer is upside down in the dirt while it digs .
It is impossible that the bulldozer is upside down in the dirt while it digs .
It is certain that the bulldozer is upside down in the dirt while it digs .
The bulldozer is upside down in the dirt while it digs .