{HEAD ~ The present invention} is {TAIL ~ a transponder testing system} contained within the transponder which verifies that the transponder is operating correctly 
is
{ HEAD ~ The present invention } is { TAIL ~ a transponder testing system } contained within the transponder which verifies that the transponder is operating correctly
HEAD 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 OTH OTH