People are running from a fire.
There is no fire burning.
There is a fire that people are running away from.
exists e1 x1 x2.(from(e1,x2) & n_fire(x2) & Actor(e1,x1) & v_run(e1) & n_people(x1))
exists p1 x1.-exists x2 x3.((x1 = x2) & n_burning(x2) & of(x2,x3) & n_fire(x3))