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This video, screenshot or audio excerpt was released under the Creative Commons license option on YouTubebefore August 2025. (YouTube changed the license version from CC BY 3.0 to 4.0 on August 1; this was not retroactive.)
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https://creativecommons.org/licenses/by/3.0CC BY 3.0 Creative Commons Attribution 3.0 truetrue
This file, which was originally posted to YouTube (archive), was reviewed on 28 July 2020 by the automatic software YouTubeReviewBot, which confirmed that this video was available there under the stated Creative Commons license on that date. This file should not be deleted if the license has changed in the meantime. The Creative Commons license is irrevocable.
This file was manually reviewed by reviewerGRuban, who confirmed that this file is allowed on Wikimedia Commons.