A stocky gentleman wearing a long-sleeve , blue shirt , black slacks , aged , black boots and a blue billed cap is scaling a roof , using the structure 's struts to approach stacks of tiles stored at the roof 's apex .
We doubt that the man is a roofer .
It is almost certain that the man is a roofer .
We doubt that the man is a roofer .
The man is a roofer .