A man and women are walking up a sand dune.
Two people are on the sand.
A man and woman are walking on the sand
exists e1 s1 x1 x2 x3 x4 x5.(a_up(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_walk(e1) & n_dune(x4) & of(x4,x5) & n_sand(x5) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists p1 x1 x2.(n_sand(x2) & on(x1,x2) & n_people(x1) & card_eq_2(x1))