Assertion: program block | /r/HasProperty | teennick
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text: Current channels which started as program blocks include TeenNick (originally a program block on Nickelodeon and Noggin); Disney Junior (which is still a program block on the Disney Channel); Nick Jr. (which still airs on Nickelodeon); Boomerang (which was once a program block on Cartoon Network); and PBS Kids, a 24/7 channel, which PBS member stations are able to provide in addition to their current children's programming on the primary PBS channel.