About: http://webisa.webdatacommons.org/170305376

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	Thus, al-Ma???mun and al-Mu???tasim (833-42) raised two types of forces.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com