a bicyclist jumping a trick on a bike
A person is on a bicycle.
A bicyclist is a person on a bike.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_bike(x4) & Theme(e1,x3) & Actor(e1,x2) & v_jump(e1) & n_trick(x3) & (x1 = x2) & n_bicyclist(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_bicycle(x2)) & n_person(x1))