PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • You may still need to buy high-quality organic compost, but make a habit of piling together pulled plants, leaves, tattered mulches and other organic materials to create rich compost for free.
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  • motherearthnews.com