A car parked at the beach.
There is a car near the beach.
when you say you are at the beach you can also mean it is near the beach and not necesarily on the beach
exists e1 x1 x2.(n_beach(x2) & at(e1,x2) & Theme(e1,x1) & v_park(e1) & n_car(x1))
exists p1 x1 x3.(n_beach(x3) & exists x2.((x1 = x2) & near(x2,x3) & n_car(x2)))