Someone can cite who discovered the fact and how other authorities have supported it is true about fact.
Fact is something that have been proven to be true or is confirmed true. The test carried on a statatement of fact is it's verifiability, that is whether it has been experienced or demonstrated to be true. Standard reference works are used as a medium to check facts.
Therefore, Someone can cite who discovered the fact and how other authorities have supported it is true about fact.
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