A large group of people in shorts walk outside in front of a capitol building.
People are outside a building.
"Outside a building" simply generalizes or simplifies the phrase "outside in front of a capitol building".
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & of(x1,x2) & in(e1,x5) & of(x5,x6) & n_building(x6) & of(x6,x7) & n_capitol(x7) & n_front(x5) & r_outside(e1) & Theme(e1,x4) & v_walk(e1) & (x2 = x4) & in(x2,x3) & n_shorts(x3) & n_people(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists p1 x1.(exists x2.(outside(x1,x2) & n_building(x2)) & n_people(x1))