Sentence:  And so , after a flight southeast to Savannakhet , we found ourselves bouncing along in a Jeep right behind the Land-Rover of Prince Boun Oum of <WSD>Champassak</WSD> , a tall man of Churchillian mien in a bush jacket and a ten-gallon hat from Texas . 
Meaning of the word marked with <WSD> tags:  a point or extent in space