【形式ばった表現】 corroborative [strong] evidence
(a) positive proof
a poet with an established [a high] reputation
He is well versed in history.
a document in which the history of Japan is written, called 'Kojiki'
a summary of the highlights of history
大昔のこと
belonging to the past
古くなったこと
a thing that happened at some time in the past
an event that occurred in the past
of a person, the state of having been familiar with something in the past