A man is doing a trick on a bicycle in the air.
On the ramp he waits to perform his tricks on his bike.
He can't be waiting to perform if he is already doing tricks on his bicycle.
exists e1 x1 x2 x3 x4.(n_air(x4) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x3) & n_bicycle(x3) & n_trick(x2) & n_man(x1))
exists e1 p1 x1 x2 x3.(n_ramp(x1) & n_bike(x3) & of(x3,x1) & n_male(x1) & n_male(x1) & n_male(x1) & n_trick(x2) & of(x2,x1) & on(e1,x1) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2.(on(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_perform(e2)))