PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium and barium; lithium, sodium and calcium are particularly preferred, and sodium is most preferred.
http://www.w3.org/ns/prov#wasQuotedFrom
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