A couple is walking away from a building.
A couple is walking into a building.
If someone is walking away from a building then they cannot be walking into a building.
exists e1 s1 x1 x2.(from(e1,x2) & n_building(x2) & a_away(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_couple(x1))
exists e1 x1 x2.(into(e1,x2) & n_building(x2) & Actor(e1,x1) & v_walk(e1) & n_couple(x1))