{HEAD ~ The present application} relates to an energy saving system, and particularly to {TAIL ~ a method} and apparatus for saving energy used by street or area lights 
relates particularly to
{ HEAD ~ The present application } relates to an energy saving system , and particularly to { TAIL ~ a method } and apparatus for saving energy used by street or area lights
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH