A band playing musical instruments.
Students are playing music with the band.
A band doesn't necessarily always include students.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_instrument(x3) & a_musical(s1) & Theme(s1,x3) & (x1 = x2) & n_band(x1))
exists e1 x1 x2 x3.(n_band(x3) & with(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_music(x2) & n_student(x1))