About: http://webisa.webdatacommons.org/444905309

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	So this is an automatic behavior on WordPress and if will try to take any structurally valid plaintext URL and turn it into a hyperlink, such as the examples you gave:
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com