A young man jumping his skateboard in a skate park with the ocean and a beach in the background .
It is certain that a young man in a skate park near the beach is in a skateboarding contest
There is almost no chance that a young man in a skate park near the beach is in a skateboarding contest
It is certain that a young man in a skate park near the beach is in a skateboarding contest
a young man in a skate park near the beach is in a skateboarding contest