About: http://webisa.webdatacommons.org/339794871

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	I do not think you would be penalized however for just three sites linking to each other, especially if they contained different (non-duplicate) content and keywords.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com