About: http://webisa.webdatacommons.org/248520807

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	1948 is when the Soviet Union established the Berlin Blockade, preventing food and other critical supplies from reaching occupied Berlin.
http://www.w3.org/ns/prov#wasQuotedFrom	explainxkcd.com