A man in a chef's hat is preparing food.
A man is playing Dance Dance Revolution.
A man can't prepare food if he's playing Dance Dance Revolution.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_prepare(e1) & n_food(x4) & in(x1,x3) & n_hat(x3) & of(x3,x2) & n_chef(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(ne_org_revolution(x2) & (x2 = x4) & ne_org_dance(x4) & (x2 = x3) & ne_org_dance(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))