Two people walk outside in a nature area.
the people are in the house
The people can't be both outside and in the house.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_nature(x4) & outside(e1,x3) & n_area(x3) & Theme(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_house(x2) & n_people(x1) & in(x1,x2))