in any event it's not a very sensible way of dividing that group. afaict there are three genera that you could use as the intension of the individuals in the su

in any event it's not a very sensible way of dividing that group. afaict there are three genera that you could use as the intension of the individuals in the sublists. you have (american)(people)who wrote(novels). taking an attribute of the (people) as the differentia makes as much sense as dividing the list by american state. dividing them by the kinds of novels they wrote would make more sense, because the writing novels thing is certainly more what the list is about than the writer's genitals. but i'm not a wikipedian.