{HEAD ~ The invention} is {TAIL ~ a light bulb assembly} having a light bulb with the ability to change color 
is
{ HEAD ~ The invention } is { TAIL ~ a light bulb assembly } having a light bulb with the ability to change color
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH