A choir performing for an audience.
The choir consists of local high school students.
The choir could be made up of anyone, nothing implies that the choir is made up of local high school students.
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_audience(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_choir(x1))
exists e1 s1 s2 x1 x2 x3.(n_choir(x1) & of(e1,x2) & n_student(x2) & of(x2,x3) & n_school(x3) & a_high(s2) & Theme(s2,x2) & a_local(s1) & Theme(s1,x2) & Actor(e1,x1) & v_consist(e1))