Task: Question Answering
Input (English): Passage: Critical reception to Vol. 3: The Subliminal Verses was generally positive. It received a score of 70% on review aggregator Metacritic based on 12 reviews. Johnny Loftus of AllMusic called the album "not just another flashy alt-metal billboard", praising the band's "dedication to making it a Slipknot album". Todd Burns of Stylus wrote that people who accuse the band of having "softened" are "mistaking softness for maturation". Burns went on to call the album "the best pop inflected metal album since System of a Down's Toxicity". Sean Richardson of Entertainment Weekly gave the album an A− and wrote that it is a "deranged hippie update" of Slayer's "masterpiece" Reign in Blood, which was also produced by Rubin. Q hailed Vol. 3: The Subliminal Verses as "a triumph". John Robb of PlayLouder complimented Slipknot's unexpected rise to become "one of the biggest groups in the world", dubbing "Before I Forget" a "classic [Slipknot] anthem". Robb added that the album is better than Iowa, citing its "differing textures". Rolling Stone gave the album a rating of 3 out of 5, stating the album presented "newer extremes" for the band, "which in Slipknot's case means tunefulness and traditional song structures".A review from the BBC praised the album, declaring that there "is no finer metal band on the planet". It cited the group's integration of "hyperactive bass drums, complex, compelling riffs and ridiculously fast fretwork" with more melodic styles and described Vermilion as "the key track ... an emotional, melodramatic, utterly convincing rollercoaster ride".Alternative Press criticized the album, writing that it "plays out like a tepid, second-rate version of Iowa, which pretty much makes it a third-rate anything else." Yahoo!'s Chris Heath also reviewed the album negatively, writing that "The Nameless" combines "the ludicrously vicious and ridiculously placid" and that by doing so makes the track feel "awkward". Heath added, "the themes are predictably absurd ... yet mildly comical given the inclusion of such disparate styles stationed side by side."Vol. 3: The Subliminal Verses peaked at position number two on the US Billboard 200, online, Australian Recording Industry Association, and Canadian sales charts. The album was certified Platinum in the United States on February 21, 2005. In 2006, the band won their first Grammy for Best Metal Performance with "Before I Forget". In 2009, Metal Hammer called it one of the "Albums of the Decade". It was also rated 31st in UK magazine Kerrang!'s "The 50 Best Albums of the 21st Century" reader poll.
In 2005, the album was ranked number 396 in Rock Hard magazine's book of The 500 Greatest Rock & Metal Albums of All Time. 
Question: What date was the album that got a 3 out of 5 from Rolling Stone certified platinum in the United States?
Output (English): February 21, 2005.