An announcer will explain knowledgeable information in {HEAD ~ regard} to {TAIL ~ the area} through which the train travels 
An announcer will explain knowledgeable information in { HEAD ~ regard } to { TAIL ~ the area } through which the train travels
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH