Certain Evidence May Not Be Used as the Sole Basis

The following evidence may not be used as the sole basis for ascertaining the facts of a case:
(1) statements of the parties;
(2) testimony of a person without capacity or with limited capacity for civil acts that is not commensurate with his age, intelligence, or mental conditions;
(3) testimony of a witness who is an interested party of either of the parties or their agents;
(4) audio-visual materials or electronic data with doubts; or
(5) copies or replicas that cannot be checked against the original documents or original objects.