{HEAD ~ The illumination assembly} includes a lighting fixture and {TAIL ~ a down feed tube} for shielding the electrical feed wires 
includes
{ HEAD ~ The illumination assembly } includes a lighting fixture and { TAIL ~ a down feed tube } for shielding the electrical feed wires
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH