PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • M.J. Ryan has studied happiness for much of her career, writing books about happiness and gratitude, including The Happiness Makeover and AdaptAbility: How to Survive Change You Didn???t Ask For.
http://www.w3.org/ns/prov#wasQuotedFrom
  • inlander.com