A person doing a trick on a bike
A professional bike stuntman is putting on a show.
Just because a person is doing a trick doesn't mean he/she is a professional stuntman on a show.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & on(x3,x4) & n_bike(x4) & n_trick(x3) & (x1 = x2) & n_person(x1))
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_show(x4) & Theme(e1,x3) & Actor(e1,x1) & v_put(e1) & n_thing(x3) & n_stuntman(x1) & of(x1,x2) & n_bike(x2) & a_professional(s1) & Theme(s1,x1))