PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is still unclear how vitamin B12 affects memory and other cognitive function but the most popular theory is the effect of the vitamin on a compound called homocysteine.
http://www.w3.org/ns/prov#wasQuotedFrom
  • progressivehealth.com