A woman breastfeeds her child while looking on a march.
A woman is breastfeeding.
A woman breastfeeds her child when she  is breastfeeding.
exists e1 e2 x1 x2 x3.(while(e1,e2) & on(e2,x3) & n_march(x3) & Actor(e2,x1) & v_look(e2) & Theme(e1,x2) & Actor(e1,x1) & v_breastfeed(e1) & n_child(x2) & of(x2,x1) & n_female(x1) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_breastfeed(e1) & n_woman(x1))