Youtube activity of "" (@MarkRober) on "SmarterEveryDay" channel.
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UCY1kMZp36IQSyNx_9h4mpCg
Commenter youtube id
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Commenter name
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@MarkRober
Commenter name id
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"Trying to Catch a 1,000 MPH Baseball - Smarter Every Day 247"
Comments by video
"World's Fastest Pitch - Supersonic Baseball Cannon - Smarter Every Day 242"