PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • R4-n???Si???(OR???)n wherein R indicates an organic group, R??? indicates a methyl group, ethyl group or propyl group, and n is an integer selected from a range of 1 to 3.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com