Father is pushing his son on the track.
A father is teaching his son how to control a train on a track.
The act of pushing does not imply teaching and does not imply that one is teaching how to control anything.  Things other than a train can be on a track.
exists e1 x1 x2 x3.(n_track(x3) & n_son(x2) & of(x2,x1) & n_male(x1) & ne_nam_father(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1))
exists e1 p1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & Topic(x2,p1) & exists e2 x3 x4.(Theme(e2,x3) & Actor(e2,x2) & v_control(e2) & on(x3,x4) & n_track(x4) & n_train(x3)) & n_son(x2) & of(x2,x1) & n_male(x1) & n_father(x1))