A construction worker in a hard hat , red shirt and yellow and orange vest operates a piece of machinery in front of palm trees .
There is a better than even chance that the man is the only one who knows how to operate this machine .
There is a better than even chance that the man is the only one who knows how to operate this machine .
It is improbable that the man is the only one who knows how to operate this machine .
The man is the only one who knows how to operate this machine .