The brown dog is out in the snow.
The brown dog is digging in the snow
The dog could be digging, but there is no way to determine if he is digging either.
exists p1 s1 s2 x1 x2.(n_snow(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1) & a_out(s2) & Manner(p1,s2) & in(x1,x2))
exists e1 s1 x1 x2.(n_snow(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1) & in(e1,x2) & Actor(e1,x1) & v_dig(e1))