alt Hacker NewsThere is no whitelist source. It can't rate sources for truthfulness. When sources conflicts - skill drops verdict to misleading or unverifiable and both are linked. Can't pick a winner at the moment. That's probably the weakest part and still a judgement call for a model.
Maybe you read them already, but wikipedia has a bunch of interesting pages about sourcing and truth like: https://en.wikipedia.org/wiki/Wikipedia:Verifiability,_not_t... and https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources