{HEAD ~ A freight transportation system} is provided and comprises {TAIL ~ a loading station}, an unloading station and a vehicle moveable therebetween to transport freight 
comprises
{ HEAD ~ A freight transportation system } is provided and comprises { TAIL ~ a loading station } , an unloading station and a vehicle moveable therebetween to transport freight
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH