A man is pulled behind a boat on a knee board while another doing the same begins to fall.
Two men on knee boards being pulled by a speedboat in rough ocean waves
Not all water sports are done in rough ocean waves. Ocean waves are not always rough. Not all knee boarding is done in the ocean.
exists e1 p1 x1 x2 x3 x4 x7.(n_same(x7) & exists e2 e3 p2 x5 x6.(Topic(e3,p2) & Actor(e3,x5) & v_begin(e3) & exists e4.(Actor(e4,x5) & v_fall(e4)) & Theme(e2,x7) & Actor(e2,x6) & v_do(e2) & (x5 = x6) & n_thing(x5)) & while(e1,p1) & behind(e1,x2) & on(x2,x3) & n_board(x3) & of(x3,x4) & n_knee(x4) & n_boat(x2) & Theme(e1,x1) & v_pull(e1) & n_man(x1))
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & Actor(e1,x5) & in(x5,x6) & n_wave(x6) & of(x6,x7) & n_ocean(x7) & a_rough(s1) & Theme(s1,x6) & n_speedboat(x5) & Theme(e1,x4) & v_pull(e1) & (x1 = x4) & on(x1,x2) & n_board(x2) & of(x2,x3) & n_knee(x3) & n_man(x1) & card_eq_2(x1))