A woman on a surfboard in front of a wave of green water
Woman teaching a class how to surf
The woman is not necessarily teaching a class
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & in(x2,x3) & of(x3,x4) & of(x4,x5) & n_water(x5) & a_green(s1) & Theme(s1,x5) & n_wave(x4) & n_front(x3) & n_surfboard(x2) & n_woman(x1))
exists e1 p1 x1 x2.(ne_nam_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & Topic(x2,p1) & exists e2.(Actor(e2,x2) & v_surf(e2)) & n_class(x2))