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