Dog chasing brown cow and black cow
A dog is chasing cows for fun.
Not all chasing is done for fun.
exists s1 s2 s3 x1 x2 x3 x4.(n_cow(x2) & a_black(s3) & Theme(s3,x2) & n_cow(x1) & a_brown(s2) & Theme(s2,x1) & of(x1,x4) & n_chasing(x4) & (x1 = x3) & ne_nam_dog(x3) & subset_of(x2,s1) & subset_of(x1,s1) & a_topic(s1))
exists e1 x1 x2 x3.(for(e1,x3) & n_fun(x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_cow(x2) & n_dog(x1))