A woman in jeans walking along a pathway with green railing .
There is a better than even chance that a woman walks next to a zoo exhibit with a green railing in between .
It is impossible that a woman walks next to a zoo exhibit with a green railing in between .
There is a better than even chance that a woman walks next to a zoo exhibit with a green railing in between .
A woman walks next to a zoo exhibit with a green railing in between .