About: http://webisa.webdatacommons.org/353107415

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	Another way to prove the expression for the sum of all positive integers up to and including n
http://www.w3.org/ns/prov#wasQuotedFrom	khanacademy.org