{HEAD ~ This invention} is of {TAIL ~ interest} in the field of the guidance of public transport road vehicles by a rail 
is of
{ HEAD ~ This invention } is of { TAIL ~ interest } in the field of the guidance of public transport road vehicles by a rail
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH