A back view of a man driving a tractor and signaling with two children as passengers at the back .
It is probably not the case that a man and his children are on the back of a tractor .
It is probably not the case that a man and his children are on the back of a tractor .
It is certain that a man and his children are on the back of a tractor .
A man and his children are on the back of a tractor .