About: http://webisa.webdatacommons.org/366683985

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	In my opinion, Link exchange is an archaic method used in the early days of SEO and just like the name, it means exchanging your link with someone and putting their link on your blog or website.
http://www.w3.org/ns/prov#wasQuotedFrom	webdeveloper.com