{HEAD ~ The portable device} 2, wherein {TAIL ~ the portable device} is a mobile telephone for communicating via a cellular communication system 
wherein
{ HEAD ~ The portable device } 2 , wherein { TAIL ~ the portable device } is a mobile telephone for communicating via a cellular communication system
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH