A parent holding her sons hand and carrying her other kid while walking in a forest.
One of the sons is walking.
When holding her sons hand and carrying her other kid we can deduce that the other one of the sons is walking, the one whose hand is being held.
exists e3 e2 e1 x1 x2 x3 x4 x5 x6 x7.(n_kid(x6) & while(e2,e3) & in(e3,x7) & n_forest(x7) & Actor(e3,x4) & v_walk(e3) & Theme(e2,x5) & Actor(e2,x4) & v_carry(e2) & -(x5 = x6) & n_kid(x5) & of(x5,x1) & n_female(x1) & n_female(x1) & n_parent(x4) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_hand(x2) & of(x2,x3) & n_son(x3) & of(x2,x1) & n_parent(x1))
exists e1 x1 x2.(n_son(x2) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_thing(x1) & card_eq_1(x1))