A man with white shorts and life jacket is waving to the camera while he is waterskiing.
A man is taking pictures of waterskiers.
When water skiing a person can not hold on to the waterski and waving at the same time he is taking pictures of other waterskiers because people do not have three hands.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6.(n_male(x6) & n_camera(x6) & exists e2.(Actor(e2,x6) & v_waterskie(e2)) & while(e1,p1) & to(e1,x6) & Actor(e1,x1) & v_wave(e1) & with(x1,x2) & n_jacket(x4) & of(x4,x5) & n_life(x5) & n_shorts(x3) & a_white(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & n_waterskier(x3) & n_picture(x2) & n_man(x1))