A man is skateboarding in front of a group of people.
A man is performing tricks in a skate park in front of an audience.
The location may not be skate park
exists e1 x1 x2 x3 x4.(in(e1,x2) & of(x2,x3) & of(x3,x4) & n_people(x4) & n_group(x3) & n_front(x2) & Actor(e1,x1) & v_skateboard(e1) & n_man(x1))
exists e1 x1 x2 x3 x4 x5 x6.(in(e1,x3) & in(x3,x5) & of(x5,x6) & n_audience(x6) & n_front(x5) & n_park(x3) & of(x3,x4) & n_skate(x4) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_trick(x2) & n_man(x1))