A dog walks in a foggy place.
A dog lies in the sun.
Dog cannot lies in sun and walk in fog at same time.
exists e1 s1 x1 x2.(in(e1,x2) & n_place(x2) & a_foggy(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1))
exists e1 x1 x2.(n_sun(x2) & in(e1,x2) & Actor(e1,x1) & v_lie(e1) & n_dog(x1))