A man dressed in black is sitting on a seat in the subway station that has an opened black umbrella laying on the ground .
It is impossible that a man throws his umbrella away after he decides he does n't need it any more .
It is impossible that a man throws his umbrella away after he decides he does n't need it any more .
Chances are about even that a man throws his umbrella away after he decides he does n't need it any more .
A man throws his umbrella away after he decides he does n't need it any more .