A man wearing a black water-proof garment is making his way through crops that have recently been watered , pulling a box .
Chances are about even that a farmer pulls a box through a field that has been irrigated .
Chances are about even that a farmer pulls a box through a field that has been irrigated .
It is highly unlikely that a farmer pulls a box through a field that has been irrigated .
A farmer pulls a box through a field that has been irrigated .