People are getting their clothes cleaned.
people getting their dirty clothes cleaned
People getting their clothes cleaned implies that they are dirty clothes.
exists e2 e1 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_get(e2) & Theme(e1,x3) & v_clean(e1) & (x2 = x3) & n_clothes(x2) & of(x2,x1) & n_thing(x1) & n_people(x1))
exists e2 e1 x1 x2 x3 x4.(Actor(e2,x1) & v_clean(e2) & Theme(e1,x3) & Actor(e1,x2) & v_get(e1) & n_clothes(x3) & of(x3,x4) & n_dirty(x4) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_people(x1))