Before onlookers in a park , a man in a black shirt and rollerblades slides backward down a railing .
It is probably the case that a man in blue jeans and rollerblades slides backward down a railing before onlookers .
It is probably the case that a man in blue jeans and rollerblades slides backward down a railing before onlookers .
It is unlikely that a man in blue jeans and rollerblades slides backward down a railing before onlookers .
A man in blue jeans and rollerblades slides backward down a railing before onlookers .