PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
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  • Studies have also suggested that vitamin D deficiency might heavily impact the elderly by making them prone to developing bone-thinning diseases such as osteoporosis and other bone-related problems including fractures.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mercola.com