About: http://webisa.webdatacommons.org/344569568

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	Sept. 18: The date on a manuscript by F. A. Tsander, which considered life support and other issues of the interplanetary travel.
http://www.w3.org/ns/prov#wasQuotedFrom	russianspaceweb.com