A dig is trekking through snow.
A dog walking through San Diego.
It doesn't snow in San Diego.
exists e1 x1 x2.(through(e1,x2) & n_snow(x2) & Actor(e1,x1) & v_trek(e1) & n_dig(x1))
exists e1 x1 x2 x3 x4.(ne_geo_diego(x3) & (x3 = x4) & ne_geo_san(x4) & a_topic(x1) & through(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_dog(x1))