About: http://webisa.webdatacommons.org/162833697

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	A popular sample of our materials is a letter I wrote to my own son, published
http://www.w3.org/ns/prov#wasQuotedFrom	nasponline.org