A woman and her son walk down a long, leaf-strewn path, while two people ride their horses in the opposite direction.
A woman and her son are walking as two people on horses ride past
A woman and her son  walk while two people on horses go by.
exists e1 p1 s1 s2 x1 x2 x3 x4 x5 x6 x8 x9.(n_direction(x9) & a_opposite(s2) & Theme(s2,x9) & exists e2 x7.(Theme(e2,x8) & Actor(e2,x7) & v_ride(e2) & in(x8,x9) & n_people(x7) & card_eq_2(x7)) & n_horse(x8) & of(x8,x2) & n_thing(x2) & while(e1,p1) & down(e1,x4) & n_path(x6) & a_leaf-strewn(s1) & Theme(s1,x6) & n_long(x5) & subset_of(x6,x4) & subset_of(x5,x4) & Actor(e1,x1) & v_walk(e1) & subset_of(x3,x1) & n_son(x3) & of(x3,x2) & n_female(x2) & subset_of(x2,x1) & n_woman(x2))
exists e1 x1 x2 x3 x4 x5 x6 x7.(on(e1,x5) & n_past(x5) & of(x5,x7) & n_ride(x7) & of(x5,x6) & n_horse(x6) & as(e1,x4) & n_people(x4) & card_eq_2(x4) & Actor(e1,x1) & v_walk(e1) & subset_of(x3,x1) & n_son(x3) & of(x3,x2) & n_female(x2) & subset_of(x2,x1) & n_woman(x2))