PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The alkanolamine is preferably monoethanolamine in which R1 is a hydrogen atom and R2 is ???CH2CH2???, and the alkyl alkoxy alkanoate is preferably methyl methoxy propanoate in which R3 is ???CH2CH2???, R4 is ???CH3 and R5 is ???CH3.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com