Sentence:  It will be seen that where the scope is similar , the Athabascan ratios come out somewhat higher ( as indeed they ought to with a total ratio of 2.8 as against 3.5 or 4 : <WSD>5</WSD> ) except for verbs , where alone the Athabascan ratio is lower . 
Meaning of the word marked with <WSD> tags:  the cardinal number that is the sum of four and one