Three people standing on a mountain about halfway to the top.
They are climbing down the mountain
Standing on a mountain about halfway to the top does not necessarily mean climbing down the mountain.
exists e1 x1 x2 x3 x4 x5.(n_top(x5) & a_topic(x1) & to(e1,x5) & on(e1,x3) & about(x3,x4) & n_halfway(x4) & n_mountain(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_mountain(x2) & n_thing(x1) & down(e1,x2) & Actor(e1,x1) & v_climb(e1))