The apparatus 9, wherein said converting means is {HEAD ~ part} of {TAIL ~ a single device} 
The apparatus 9 , wherein said converting means is { HEAD ~ part } of { TAIL ~ a single device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL