Youtube activity of "David Bolha" (@davidbolha) on "TED-Ed" channel.
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UCnnyXZnRvPkFu6UfCUAKSNg
Commenter youtube id
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David Bolha
Commenter name
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@davidbolha
Commenter name id
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"Why don't perpetual motion machines ever work? - Netta Schramm"
Comments by video
"Платоновская аллегория пещеры — Алекс Гендлер"