About: http://webisa.webdatacommons.org/185618496

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	Secondary sources, such as biographies, almanacs, encyclopedias, and textbooks, were written by people with indirect knowledge.
http://www.w3.org/ns/prov#wasQuotedFrom	familyeducation.com