This person is performing a trick in skateboarding competition , with people watching in the background .
There is little chance that a man is using his skateboard to perform a trick in front of a crowd .
It is probable that a man is using his skateboard to perform a trick in front of a crowd .
There is little chance that a man is using his skateboard to perform a trick in front of a crowd .
A man is using his skateboard to perform a trick in front of a crowd .