{HEAD ~ Sensors} 112 are employed to monitor {TAIL ~ one or more thermal conditions} of one or more regions or locations of one or more of light sources 102 
are employed to monitor
{ HEAD ~ Sensors } 112 are employed to monitor { TAIL ~ one or more thermal conditions } of one or more regions or locations of one or more of light sources 102
HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH