A group of workers in bright orange vests walk on railroad tracks.
A group of workers are inspecting a track.
Because people are walking around a track doesn't mean they are inspecting it.
exists e1 s1 x1 x2 x3 x4 x5 x6.(on(e1,x5) & n_track(x5) & of(x5,x6) & n_railroad(x6) & Actor(e1,x1) & v_walk(e1) & in(x1,x3) & n_vest(x3) & of(x3,x4) & n_orange(x4) & a_bright(s1) & Theme(s1,x3) & of(x1,x2) & n_worker(x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_inspect(e1) & n_track(x3) & of(x1,x2) & n_worker(x2) & n_group(x1))