About: http://webisa.webdatacommons.org/453375686

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	During the last two decades of the 19th century, Ratzel developed a theory according to which the development of all species, including humans, is primarily determined by their adaptation to geographic circumstances.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com