PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Toys in Ancient times used to be made of natural products such as wood, stone and clay, indeed the first yo-yos are recorded to have been made of clay discs and used as far back at 440 BC. Today, toys are often made from plastic and other synthetic materials, although wood and other more sustainable products are becoming more widely available.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thecompleteuniversityguide.co.uk