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Expressed, Demonstrated, Proved
It is demonstrated by Timothy. The cat.
Michael First Demonstrated the Moonwalk In 1983 In Motown 25
it was first demonstrated by Sir F.C.Steward.
Did you mean "demonstrated"?
If so, demonstrated means showed.
"He showed them how to make omelets." / "He demonstrated to them how to make omelets."
infinitive: to demonstrate