Two people are outside walking their dog.
Two people are walking a dog.
People are walking their dog.
exists e1 s1 x1 x2.(for(s1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x2) & of(x2,x1) & n_thing(x1) & Theme(s1,x1) & a_outside(s1) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x2) & n_people(x1) & card_eq_2(x1))