#obolus  a Greek unit of weight equal to one tenth of a gram
  supertype:  #weight_unit  a unit used to measure weight; "he placed two weights in the scale pan"
  part of:  #gram__gramme__gm__g  a metric unit of weight equal to one thousandth of a kilogram
     part of:  #dekagram__decagram__dkg__dag  10 grams
        part of:  #hectogram__hg  100 grams
           part of:  #kilogram__kg__kilo__key  one thousand grams; the basic unit of mass adopted under the System International d'Unites; "a kilogram is approximately 2.2 pounds"; "they were carrying two keys of heroin"
              part of:  #myriagram__myg  one ten thousandth of a centner
                 part of:  #centner  in some European countries: a unit of weight equivalent to 50 kilograms
                    part of:  #metric_hundredweight__hundredweight__doppelzentner__centner  a unit of weight equal to 100 kilograms
                       part of:  #quintal  a unit of weight equal to 100 kilograms
                          part of:  #metric_ton__MT__tonne__t  a unit of weight equivalent to 1000 kilograms

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