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