PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Sulfur can be recycled back into the soil system through crop residue, Dick says, but in crops such as corn and alfalfa much of the protein ??? and sulfur ??? is removed with harvest.
http://www.w3.org/ns/prov#wasQuotedFrom
  • croplife.com