Sentence:  For Athabascan , with a greater <WSD>range</WSD> of stems , the first two of five corresponding columns were identical , 1 and 2 stems ; the three others had to be spread somewhat , and are headed respectively * * f ; * * f ; and * * f stems . 
Meaning of the word marked with <WSD> tags:  an area in which something acts or operates or has power or control: "the range of a supersonic jet"