The tennis player with the blue hat and green shirt, served the ball with top spin on the ball.
The tennis player is serving the ball.
it is implied that the tennis player serving the ball is still playing tennis.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(n_ball(x6) & n_ball(x6) & n_shirt(x5) & a_green(s2) & Theme(s2,x5) & n_hat(x4) & subset_of(x5,x3) & subset_of(x4,x3) & a_blue(s1) & Theme(s1,x3) & n_player(x1) & of(x1,x2) & n_tennis(x2) & on(e1,x6) & with(e1,x7) & n_spin(x7) & a_top(s3) & Theme(s3,x7) & Theme(e1,x6) & Actor(e1,x1) & v_serve(e1) & with(x1,x3))
exists e1 x1 x2 x3.(n_ball(x3) & n_player(x1) & of(x1,x2) & n_tennis(x2) & Theme(e1,x3) & Actor(e1,x1) & v_serve(e1))