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