#sorting  grouping by class or kind or size
  supertype:  #grouping  the activity of putting things together in groups
  subtype:  #triage  sorting and allocating aid on the basis of need for or likely benefit from medical treatment or food
  subtype:  #separation.sorting  sorting one thing from others: "the separation of wheat from chaff"; "the separation of mail by postal zones"
     subtype:  #threshing  the separation of grain or seeds from the husks and straw; "they used to do the threshing by hand but now there are machines to do it"
     subtype:  #winnow__winnowing__sifting  the act of separating grain from chaff; "the winnowing was done by women"

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