A man at a park is taking pictures.
A man is at the beach taking pictures.
A man cannot be at a beach and at a park at the same time.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_picture(x3) & at(x1,x2) & n_park(x2) & n_man(x1))
exists p1 x1 x2.(n_beach(x2) & exists e1 x3 x4.(at(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & n_picture(x4) & (x2 = x3)) & n_man(x1))