Many people wearing blue jackets are marching down a street.
A marching band parades down the street.
People marching down the street would not always be in a band.
exists e1 e2 s1 x1 x2 x3 x4.(down(e2,x4) & n_street(x4) & Actor(e2,x1) & v_march(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jacket(x3) & a_blue(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1) & n_quantity(x1))
exists e1 x1 x2 x3.(n_street(x3) & a_topic(x1) & down(x1,x3) & n_parade(x1) & of(x1,x2) & n_band(x2) & Actor(e1,x1) & v_march(e1))