Passengers boarding a train.
THe passengers are sleeping
The passengers cannot be boarding a train if they are sleeping.
exists e1 x1 x2.(ne_nam_passengers(x1) & Theme(e1,x2) & Actor(e1,x1) & v_board(e1) & n_train(x2))
exists e1 x1 x2.(Actor(e1,x1) & v_sleep(e1) & n_passenger(x1) & (x1 = x2) & ne_nam_the(x2))