A group of workers in blue uniforms are marching in line down a path.
Some people are walking in formation.
"Walking in formation" is a rephrasing of marching in line.
exists e1 s1 x1 x2 x3 x4 x5.(down(e1,x5) & n_path(x5) & in(e1,x4) & n_line(x4) & Actor(e1,x1) & v_march(e1) & in(x1,x3) & n_uniform(x3) & a_blue(s1) & Theme(s1,x3) & of(x1,x2) & n_worker(x2) & n_group(x1))
exists e1 x1 x2.(in(e1,x2) & n_formation(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))