An Indian couple walk down a sad stretch of land.
Two Indians are walking on their tribal land.
Not every sad stretch of land are tribal land
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & down(x1,x3) & of(x3,x4) & n_land(x4) & n_stretch(x3) & a_sad(s2) & Theme(s2,x3) & n_walk(x1) & of(x1,x2) & n_couple(x2) & a_indian(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_land(x2) & a_tribal(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & ne_org_indians(x1) & card_eq_2(x1) & on(e1,x2) & Actor(e1,x1) & v_walk(e1))