A young mother and her baby walk along a street.
A woman and a baby are on a street.
Along a street and on a street are similar placement phrases to show where someone is in relation to a street.
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 p1 x1 x2 x3.(exists x4.(on(x1,x4) & n_street(x4)) & subset_of(x3,x1) & n_baby(x3) & subset_of(x2,x1) & n_woman(x2))