A man on a bmx bike jumps over a train
The bmx biker falls.
The bmx biker falls so he cannot be jumping.
exists e1 x1 x2 x3 x4.(over(e1,x4) & n_train(x4) & Actor(e1,x1) & v_jump(e1) & on(x1,x2) & n_bike(x2) & of(x2,x3) & n_bmx(x3) & n_man(x1))
exists e1 x1 x2.(n_biker(x1) & of(x1,x2) & n_bmx(x2) & Actor(e1,x1) & v_fall(e1))