A statue of an Indian is on the sidewalk in front of some shops.
There is a statue of the president on the sidewalk.
There was a statue of an Indian referenced, not of the president.
exists p1 x1 x2 x3.(n_sidewalk(x3) & exists x4 x5.(on(x1,x3) & in(x3,x4) & of(x4,x5) & n_shop(x5) & n_front(x4)) & of(x1,x2) & ne_geo_indian(x2) & n_statue(x1))
exists p1 x1 x3 x4.(n_sidewalk(x4) & n_president(x3) & exists x2.((x1 = x2) & of(x2,x3) & on(x3,x4) & n_statue(x2)))