A mother and her child posing for a photo.
The mom and child are chasing each other.
A mother and her child posing for a photo are not necessarily chasing each other.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & for(e1,x4) & n_photo(x4) & Actor(e1,x3) & v_pose(e1) & (x2 = x3) & n_child(x2) & of(x2,x1) & n_female(x1) & subset_of(x1,s1) & n_mother(x1))
exists x1 x2 x3.(n_child(x3) & n_mom(x2) & subset_of(x3,x1) & subset_of(x2,x1) & all x4.(n_other(x4) -> exists e1.(Theme(e1,x4) & Actor(e1,x1) & v_chase(e1))))