A bike is parked in front of the metro.
A car parked by the metro.
Either a bike or a car is pared by the metro.
exists e1 x1 x2 x3.(n_metro(x3) & in(e1,x2) & of(x2,x3) & n_front(x2) & Theme(e1,x1) & v_park(e1) & n_bike(x1))
exists e1 x1 x2.(n_metro(x2) & Actor(e1,x2) & Theme(e1,x1) & v_park(e1) & n_car(x1))