In {HEAD ~ the exemplary embodiment}, the tube is a nuclear fuel rod and the internal components are {TAIL ~ fuel pellets} 
In { HEAD ~ the exemplary embodiment } , the tube is a nuclear fuel rod and the internal components are { TAIL ~ fuel pellets }
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL