A young mother and her baby walk along a street.
a young mother and her baby are walking down a street on a sidewalk
Just because a young mother and her baby walk along a street doesn't imply on a sidewalk.
exists s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & along(x2,x4) & n_street(x4) & n_walk(x2) & of(x2,x3) & n_baby(x3) & of(x2,x1) & n_female(x1) & subset_of(x1,s1) & n_mother(x1) & a_young(s2) & Theme(s2,x1))
exists e1 s1 x1 x2 x3 x4 x5.(on(e1,x5) & n_sidewalk(x5) & down(e1,x4) & n_street(x4) & Actor(e1,x1) & v_walk(e1) & subset_of(x3,x1) & n_baby(x3) & of(x3,x2) & n_female(x2) & subset_of(x2,x1) & n_mother(x2) & a_young(s1) & Theme(s1,x2))