A skateboarder jumps another skateboard .
It is probable that the skateboarder is trying a trick he saw his favorite professional skateboarder do at the competition last week .
There is almost no chance that the skateboarder is trying a trick he saw his favorite professional skateboarder do at the competition last week .
It is probable that the skateboarder is trying a trick he saw his favorite professional skateboarder do at the competition last week .
The skateboarder is trying a trick he saw his favorite professional skateboarder do at the competition last week .