How does your technology distinguish facts from lies?

Well it doesn’t. Linked Data technology can give you better means to decide whether to accept a claim as fact or not by linking it to supportive evidence or rebuttals. By making assertions more precise they are the better object of scrutiny, by linking them to a network of knowledge one can see what acceptance of a claim implies.

Where do I find Linked Data?

Several government agencies have started providing data as Linked Data. DBpedia.org exposes the contents of Wikipedia as Linked Data. Wikidata.org is a free and open knowledge base that can be read and edited by both humans and machines, Wikidata exposes all its data as Linked Data and allows querying with SPARQL.