With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: AC/DC were formed by Malcolm Young and Angus Young in 1973.
text_B: AC / DC are an Australian rock band , formed in 1973 by brothers Malcolm and Angus Young .. Angus Young. Angus Young. rock. Rock music. Malcolm. Malcolm Young. A hard rock / blues rock band , they have also been considered a heavy metal band , although they have always dubbed their music simply `` rock and roll '' .. blues rock. blues rock. rock and roll. rock and roll. rock. Rock music. hard rock. hard rock. heavy metal. heavy metal music. AC / DC underwent several line-up changes before releasing their first album , High Voltage , in 1975 .. High Voltage. High Voltage ( 1975 album ). Membership subsequently stabilised until bassist Mark Evans was replaced by Cliff Williams in 1977 for the album Powerage .. Cliff Williams. Cliff Williams. Mark Evans. Mark Evans ( musician ). Powerage. Powerage. Within months of recording the album Highway to Hell , lead singer and co-songwriter Bon Scott died on 19 February 1980 after a night of heavy alcohol consumption .. Bon Scott. Bon Scott. Highway to Hell. Highway to Hell. The group considered disbanding , but buoyed by support from Scott 's parents , decided to continue and set about finding a new vocalist .. Ex-Geordie singer Brian Johnson was auditioned and selected to replace Scott .. Brian Johnson. Brian Johnson. Geordie. Geordie ( band ). Later that year , the band released the new album , Back in Black , which was made as a tribute to Bon Scott .. Bon Scott. Bon Scott. Back in Black. Back in Black. The album launched them to new heights of success and became their all-time best-seller .. The band 's next album , For Those About to Rock We Salute You , was their first album to reach number one in the United States .. For Those About to Rock We Salute You. For Those About to Rock We Salute You. Drummer Phil Rudd was fired in 1983 and replaced by ex-A II Z drummer Simon Wright , who left to join Dio in 1989 .. Phil Rudd. Phil Rudd. Simon Wright. Simon Wright ( musician ). A II Z. A II Z. Dio. Dio ( band ). The band experienced a resurgence in the early 1990s with the release of The Razors Edge .. The Razors Edge. The Razors Edge ( AC / DC album ). Phil Rudd returned in 1994 after Chris Slade , who was with the band from 1989 to 1994 , was asked to leave in favour of him , and contributed to the band 's 1995 album Ballbreaker .. Phil Rudd. Phil Rudd. Chris Slade. Chris Slade. Ballbreaker. Ballbreaker. Stiff Upper Lip , released in 2000 , was well received by critics .. Stiff Upper Lip. Stiff Upper Lip ( album ). The band 's studio album , Black Ice , released in 2008 , was the second-highest-selling album of that year , and their biggest chart hit since For Those About to Rock , eventually reaching No. 1 on all charts worldwide .. Black Ice. Black Ice ( album ). The band 's line-up remained the same until 2014 with Malcolm Young 's retirement due to early-onset dementia and Rudd 's legal troubles .. Malcolm Young. Malcolm Young. Malcolm. Malcolm Young. dementia. dementia. In 2016 , Johnson was advised to stop touring on account of worsening hearing loss and Guns N ' Roses frontman Axl Rose stepped in as the band 's vocalist for the remainder of that year 's dates .. Axl Rose. Axl Rose. Long-term bass player Cliff Williams retired from the band at the end of their 2016 Rock Or Bust world tour .. Cliff Williams. Cliff Williams. AC / DC have sold more than 200 million records worldwide , including 71.5 million albums in the United States , adding them to the list of highest-certified music artists in the United States and the list of best-selling music artists .. list of highest-certified music artists in the United States. list of highest-certified music artists in the United States. list of best-selling music artists. list of best-selling music artists. Back in Black has sold an estimated 50 million units worldwide , making it the second-highest-selling album by any artist -- and the highest-selling album by any band .. Back in Black. Back in Black. second-highest-selling album by any artist. List of best-selling albums. The album has sold 22 million units in the US , where it is the sixth-highest-selling album of all time .. AC / DC ranked fourth on VH1 's list of the `` 100 Greatest Artists of Hard Rock '' and were named the seventh `` Greatest Heavy Metal Band of All Time '' by MTV .. VH1. VH1. In 2004 , AC / DC ranked No. 72 on the Rolling Stone list of the `` 100 Greatest Artists of All Time '' .. Rolling Stone. Rolling Stone. Producer Rick Rubin , who wrote an essay on the band for the Rolling Stone list , referred to AC / DC as `` the greatest rock and roll band of all time '' .. rock and roll. rock and roll. rock. Rock music. Rolling Stone. Rolling Stone. Rick Rubin. Rick Rubin. In 2010 , AC / DC were ranked number 23 in the VH1 list of the `` 100 Greatest Artists of All Time '' .. VH1. VH1
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