A woman and child walking by a building.
A woman and a a child.
Both have woman.
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & by(x2,x4) & n_building(x4) & n_walking(x2) & of(x2,x3) & n_child(x3) & subset_of(x1,s1) & n_woman(x1))
exists s1 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & Time(x2,x3) & n_a(x3) & n_child(x2) & subset_of(x1,s1) & n_woman(x1))