A man wearing a yellow shirt is riding a large riding lawn mower , which is spraying cut grass behind him ; pine trees are visible in the background .
There is a better than even chance that his children are playing checkers on the porch .
There is a better than even chance that his children are playing checkers on the porch .
It is highly unlikely that his children are playing checkers on the porch .
His children are playing checkers on the porch .