In this way, an automated city tour or sightseeing tour is made possible also by {HEAD ~ means} of {TAIL ~ the mobile communications system} 
of
In this way , an automated city tour or sightseeing tour is made possible also by { HEAD ~ means } of { TAIL ~ the mobile communications system }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL