Mom is teaching her baby how to write as she signs a poster.
The mom is holding something to write with in her hand.
mom is holding and  teaching her baby how to write  in her hand  as she signs a poster
exists e1 p1 x1 x2.(n_female(x2) & n_baby(x2) & of(x2,x1) & n_female(x1) & ne_nam_mom(x1) & Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & Topic(x2,p1) & all x3.(n_poster(x3) -> exists e2 x4.(as(e2,x2) & Theme(e2,x4) & Actor(e2,x2) & v_write(e2) & for(x4,x3) & n_sign(x4))))
exists e1 p1 x1 x2 x3 x4.(n_hand(x4) & of(x4,x1) & n_female(x1) & n_mom(x1) & in(e1,x4) & with(e1,x3) & n_thing(x3) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & Topic(x2,p1) & exists e2.(Actor(e2,x2) & v_write(e2)) & n_thing(x2))