Two zebras standing in the snow
Two zebras standing behind a fence
Two zebras during the winter
snow is covering the ground
the zebras are behind the fence
a building behind the zebras 
the fence is black
the snow is white
a building is beside the zebras
the building is green in color
Pen is covered with snow
Fence of pen is wired
Wall of building is green
two zebras in animal pen
zebras graze in their pen by a green fence and green walls and a long green building