Assertion: hip hop's album | /r/HasProperty | dubbed by billboard editor paul grein
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Source sentences:
text: The album played a key role in hip hop's mainstream emergence in 1990, dubbed by Billboard editor Paul Grein as "the year that rap exploded".
text: The album played a key role in hip hop's mainstream emergence in 1990, dubbed by Billboard editor Paul Grein as "the year that rap exploded".