A conductor of a train is inside the train working on it as two other men watch.
Two men are driving the train.
The two men can be watching the conductor drive or driving it themselves, not both.
exists p1 x1 x2 x5.(n_man(x5) & exists e2 e1 x3 x4 x6.(inside(x1,x2) & Theme(e2,x6) & Actor(e2,e1) & v_watch(e2) & (x2 = x6) & as(e1,x4) & -(x4 = x5) & n_man(x4) & card_eq_2(x4) & on(e1,x1) & Actor(e1,x3) & v_work(e1) & n_thing(x3)) & n_thing(x1) & n_train(x2) & n_train(x2) & of(x1,x2) & n_conductor(x1))
exists e1 x1 x2.(n_train(x2) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_man(x1) & card_eq_2(x1))