White dog with tan spot leaping over snow covered object with white and black dog behind.
The dogs are running after a ball.
The snow covered object isn't necessarily a ball. The dogs aren't necessarily running after a ball.
exists e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & with(x1,x3) & with(e1,x7) & n_behind(x7) & of(x7,x8) & n_dog(x8) & a_black(s4) & Theme(s4,x7) & a_white(s3) & Theme(s3,x7) & over(e1,x5) & n_object(x5) & a_covered(s2) & Theme(s2,x5) & of(x5,x6) & n_snow(x6) & Actor(e1,x4) & v_leap(e1) & (x3 = x4) & n_spot(x3) & a_tan(s1) & Theme(s1,x3) & n_dog(x1) & (x1 = x2) & ne_per_white(x2))
exists e1 x1 x2.(n_dog(x1) & after(e1,x2) & n_ball(x2) & Actor(e1,x1) & v_run(e1))