Two men are using a projector.
The two men are sleeping.
The men cannot simultaneously be sleeping and using a projector
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_use(e1) & n_projector(x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1.(n_man(x1) & card_eq_2(x1) & Actor(e1,x1) & v_sleep(e1))