Several people run down a highway with mountains in the background.
Some people are running a marathon.
We have no idea if they are running a marathon, people run for tons or reasons.
exists e1 s1 s2 x1 x2 x3 x4.(n_background(x4) & a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & with(x2,x3) & in(x3,x4) & n_mountain(x3) & n_highway(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_marathon(x2) & n_people(x1))