About: http://webisa.webdatacommons.org/43278711

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	UNIX, DOS, Windows, and Macintosh System 7 are examples of operating systems.
http://www.w3.org/ns/prov#wasQuotedFrom	mdaprograms.com