Signs on a black background are bad, good and excellentSigns on a black background are bad, good and excellent
A white swan floats on the water with its chicks against a background of green treesA white swan floats on the water with its chicks against a background of green trees
Biologically hazardous products should be carried on the appropriate signsBiologically hazardous products should be carried on the appropriate signs
The old shot stop sign on the background of the forestThe old shot stop sign on the background of the forest