About: http://webisa.webdatacommons.org/154348446

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	Various types of OS are available to users today, such as Microsoft Windows, Mac OS, and GNU/Linux.
http://www.w3.org/ns/prov#wasQuotedFrom	pcm.com