PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The carbon dioxide is a gas that forms when an acid ??? the vinegar ??? reacts with a base ??? the baking soda.???
http://www.w3.org/ns/prov#wasQuotedFrom
  • scholastic.com