A man in a black shirt is riding a mule trough the desert , with the sun shining in the background .
It is probably not the case that a man rides a mule in the desert toward an oasis .
It is probably not the case that a man rides a mule in the desert toward an oasis .
It is likely that a man rides a mule in the desert toward an oasis .
A man rides a mule in the desert toward an oasis .