About: http://webisa.webdatacommons.org/279282237

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	Portability was a problem in the early days because there was no agreed standard--not even IBM's reference manual--and computer companies vied to differentiate their offerings from others by providing incompatible features.
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com