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