sentence: There's a man in a red shirt and a checked shirt over it, standing in a park. sentence:  He throws a rubber tire on the ground. sentence:  He is standing near a park bench with a skateboard in his hand. sentence:  He is demonstrating how to do stunts on the skateboard by jumping up on the park bench. sentence:  He repeats the same stunt over and over again. sentence:  He falls off the skateboard a couple times but is successful most of the time. sentence:  Then he holds the skateboard in his hand as he talks while pointing to the bench.