People outside in a city field.
some People outdoor
A field is found outside in the open, hence the people are outdoors.
exists x1 x2 x3 x4.(a_topic(x1) & in(x2,x3) & n_field(x3) & of(x3,x4) & n_city(x4) & outside(x1,x2) & n_thing(x2) & n_people(x1))
exists s1 x1 x2.(a_topic(x1) & Theme(s1,x2) & a_outdoor(s1) & (x1 = x2) & n_people(x1))