A man does a wheelie on a motorcycle while a crowd watches.
A man performs on a motorocyle at the car show.
Doing a wheelie while a crowd watches does not imply that a motorcyclist performs, nor that he is at the car show.
exists e1 p1 x1 x2 x3.(exists e2 x4.(Actor(e2,x4) & v_watch(e2) & n_crowd(x4)) & while(e1,p1) & on(e1,x3) & n_motorcycle(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_wheelie(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_show(x3) & of(x3,x4) & n_car(x4) & at(e1,x3) & on(e1,x2) & n_motorocyle(x2) & Actor(e1,x1) & v_perform(e1) & n_man(x1))