Mom is teaching her baby how to write as she signs a poster.
The mom is typing on a computer.
teaching and typing are different actions
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 x1 x2.(n_mom(x1) & on(e1,x2) & n_computer(x2) & Actor(e1,x1) & v_type(e1))