A group of people are running through a city.
Some people are dressed in running clothes and running a road race in a big city.
People running are not assumed to be dressed in running clothes.  Running does not imply a road race.  A city is not assumed to be big.
exists e1 x1 x2 x3.(through(e1,x3) & n_city(x3) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 e2 e3 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(in(e1,e3) & in(e3,x8) & n_city(x8) & a_big(s2) & Theme(s2,x8) & Theme(e3,x6) & Actor(e3,x5) & v_run(e3) & n_race(x6) & of(x6,x7) & n_road(x7) & in(e1,e2) & in(e2,x4) & n_city(x4) & a_big(s1) & Theme(s1,x4) & Theme(e2,x3) & Actor(e2,x2) & v_run(e2) & n_clothes(x3) & Theme(e1,x1) & v_dress(e1) & n_people(x1))