A man and a woman in a silver coat are on a city sidewalk with their backs to the camera.
There is a child and his baby sister.
A man and a woman cannot be a child and his baby sister.
exists p1 x1 x2 x3 x4 x5 x8 x9.(n_camera(x9) & exists x6 x7.(on(x1,x6) & with(x6,x8) & to(x8,x9) & n_sidewalk(x6) & of(x6,x7) & n_city(x7)) & n_back(x8) & of(x8,x2) & n_thing(x2) & subset_of(x3,x1) & in(x3,x4) & n_coat(x4) & of(x4,x5) & n_silver(x5) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists p1 x1 x2 x3 x4 x5.((x1 = x2) & subset_of(x4,x2) & n_sister(x4) & of(x4,x5) & n_baby(x5) & of(x4,x3) & n_male(x3) & subset_of(x3,x2) & n_child(x3))