two people with hiking gear at a checkpoint on a mountain.
The two people are sleeping in the sand.
They are either at a checkpoint on a mountain or sleeping in the sand.
exists x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & at(x2,x4) & on(x4,x5) & n_mountain(x5) & n_checkpoint(x4) & n_gear(x2) & of(x2,x3) & n_hiking(x3) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_sand(x2) & n_people(x1) & card_eq_2(x1) & in(e1,x2) & Actor(e1,x1) & v_sleep(e1))