A tan dog walks across the snow.
A puppy is walking outside in winter.
A tan dog need not necessarily be a puppy; It could be a grown one as well.
exists e1 s1 x1 x2.(n_snow(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1) & a_tan(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_winter(x2) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_puppy(x1))