Five hikers, one facing towards the camera and the others facing away from it, are walking through a rocky riverbed.
They are professional hikers.
The hikers may or may not be professional.
exists e1 e3 e2 p1 s1 x1 x2 x3 x4 x5 x6 x7.(n_camera(x5) & through(e3,x7) & n_riverbed(x7) & a_rocky(s1) & Theme(s1,x7) & Actor(e3,x1) & v_walk(e3) & rel(x1,x2) & towards(e1,x4) & subset_of(x2,x4) & exists s2.(Theme(s2,x6) & a_away(s2)) & Topic(e2,p1) & Actor(e2,x6) & v_face(e2) & (x2 = x6) & -(x2 = x1) & n_person(x1) & n_person(x2) & subset_of(x5,x4) & from(e1,x1) & n_thing(x1) & Actor(e1,x3) & v_face(e1) & (x2 = x3) & n_thing(x2) & card_eq_1(x2) & n_hiker(x1) & card_eq_5(x1))
exists p1 x1.(n_thing(x1) & exists s1 x2.((x1 = x2) & n_hiker(x2) & a_professional(s1) & Theme(s1,x2)))