Runners, running uphill with spectators on the sidelines.
People are running outdoors.
Because the words uphill and sidelines are used, it can be assumed that the event is outdoors.
exists e1 x1 x2 x3 x4.(n_sideline(x4) & on(e1,x4) & with(e1,x3) & n_spectator(x3) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_uphill(x2) & n_runner(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_outdoors(x2) & n_people(x1))