PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The bohemian glass is characterized by the production of Forest glass(Waldglas) up to nearly 1650 AD. There was an opinion, that the name forest glass came from the greenish colour of the bohemian glass of that time, and that this was caused by the inability of the glass manufacturers to produce clear glass without impurities.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bohemian-glassworks.com