Assertion: hip hop's album | /r/HasProperty | released on december
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Source sentences:
text: B announced that the album would be released on December 17, 2013.
text: B later revealed in an early September interview, that the album would be released in December 2013.
text: The album was released on December 11, 2012, with features from Lil Wayne, Big Sean, J. Cole, Jamie Foxx, Wiz Khalifa, Tyga and Chris Brown among others.