About: http://webisa.webdatacommons.org/237971080

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	See, e.g., ???Protective Groups in Organic Synthesis??? by Theodora W. Greene, John Wiley and Sons, New York, 1981 for examples of protecting groups.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com