About: http://webisa.webdatacommons.org/383186436

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	In one preferred embodiment, each of letter types A, B, C and D represents a different ???customized??? letter that has been prepared based on particular pre-defined criteria.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca