two people with hiking gear at a checkpoint on a mountain.
The people are hiking along the mountain.
Just because the two people are with hiking gear, does not imply they are hiking.
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_mountain(x2) & n_people(x1) & along(e1,x2) & Actor(e1,x1) & v_hike(e1))