A lady is soldering some material, while a child looks on.
child is watching
A child looks on implies that a child is watching.
exists e1 p1 x1 x2.(exists e2 p2 x3.(exists s1.(Theme(s1,x3) & a_on(s1)) & Topic(e2,p2) & Actor(e2,x3) & v_look(e2) & n_child(x3)) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_solder(e1) & n_material(x2) & n_lady(x1))
exists e1 x1.(Actor(e1,x1) & v_watch(e1) & n_child(x1))