#metric_hundredweight__hundredweight__doppelzentner__centner  a unit of weight equal to 100 kilograms
  supertype:  metric_weight_unit__weight_unit  a decimal unit of weight based on the gram
  part:  centner
  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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