A man is pulled behind a boat on a knee board while another doing the same begins to fall.
the man is wearing blue swim trunks.
Men who participate in water sports often wear clothing other than swim trunks. Not all swim trunks are blue.
exists e1 p1 x1 x2 x3 x4 x7.(n_same(x7) & exists e3 e2 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.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_trunk(x2) & of(x2,x3) & n_swim(x3) & a_blue(s1) & Theme(s1,x2))