A crowd of people in a parade.
A high school band is performing in the parade.
Just because a crowd of people are in a parade does not mean it is a high school band.
exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_parade(x3) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists e1 s1 x1 x2 x3.(n_parade(x3) & in(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_band(x1) & of(x1,x2) & n_school(x2) & a_high(s1) & Theme(s1,x1))