Read the passage. (1) CHORUS: We kept the gate, we kept the law, we kept the list of names. (2) CHORUS: We did not ask whose hunger waited beyond the wall. (3) CHORUS: Order is a roof, and roofs require beams. (4) ONE VOICE: My sister was beyond the wall. (5) CHORUS: Then count the beam that cracked. What is the effect of the shift within the chorus?