Three people stringing something across an expanse of sand.
The group of people are outside.
The people are near an expanse of sand so they must be outside.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_string(e1) & across(x3,x4) & of(x4,x5) & n_sand(x5) & n_expanse(x4) & n_thing(x3) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists s1 x1 x2.(n_group(x1) & Theme(s1,x1) & a_outside(s1) & of(x1,x2) & n_people(x2))