A fluffy white dog running across the snow.
He is running after a ball.
Running across the snow does not necessarily mean it is after a ball.
exists e1 s1 s2 x1 x2 x3.(n_snow(x3) & a_topic(x1) & across(e1,x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_fluffy(s1) & Theme(s1,x1))
exists e1 x1.(after(e1,x1) & n_ball(x1) & Actor(e1,x1) & v_run(e1) & n_male(x1))