About: http://webisa.webdatacommons.org/405088635

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	Like you said, a StringBuffer would be totally different. int, long, and any other primitive would act like the String. (I am not saying a String is a primitive)
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com