Youtube activity of "J Smith" (@jsmithmultimediatech) on "Spark" channel.
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Commenter youtube id
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J Smith
Commenter name
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@jsmithmultimediatech
Commenter name id
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"How London's Underground Stations Handle Thousands Of Commuters Every Morning | The Tube"
Comments by video
"The Last Moon Landing: Why Did We Stop Going To The Moon? | Apollo 17 | Spark"
"The Science Behind Constructing The Worlds Longest Underwater Tunnel | Super Structures | Spark"
"Why There Are So Many Incidents On The London Underground | The Tube | Spark"