Man working on old truck while child watches.
A child is watching a man work.
A child is watching is the same as child watches
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & while(e1,x4) & n_watch(x4) & of(x4,x5) & n_child(x5) & on(e1,x3) & n_truck(x3) & a_old(s1) & Theme(s1,x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_work(x2) & of(x2,x3) & n_man(x3) & n_child(x1))