Q:Information:  - Candlemass is an influential Swedish doom metal band established in Stockholm 1984 by bassist, songwriter and bandleader Leif Edling and drummer Matz Ekström. After releasing five full-length albums and touring extensively throughout the 1980s and early 1990s, Candlemass disbanded in 1994, but reunited three years later. After breaking up again in 2002, Candlemass reformed in 2004 and have continued to record and perform since then. Candlemass is also the seventh best selling artist coming out from Sweden selling as of 2010 more than 15 million albums worldwide.  - My Dying Bride are an English doom metal band formed in Bradford, England in 1990. To date, My Dying Bride have released twelve full-length studio albums, three EPs, one demo, one box set, four compilation albums, one live album, and one live CD/DVD release.  - Bradford is in the Metropolitan Borough of the City of Bradford in West Yorkshire, England, in the foothills of the Pennines west of Leeds, and northwest of Wakefield. Bradford became a municipal borough in 1847, and received its charter as a city in 1897. Following local government reform in 1974, city status was bestowed upon the wider metropolitan borough.  - Cradle of Filth are a British extreme metal band that formed in Suffolk in 1991. The band's musical style evolved from black metal to a cleaner and more "produced" amalgam of gothic metal, symphonic metal and other metal genres. Their lyrical themes and imagery are heavily influenced by gothic literature, poetry, mythology and horror films.  - Martin Powell (born 19 July 1973 in Sheffield, South Yorkshire, England) is an English musician. In 1991, Powell auditioned for the position of bass-playing in the band My Dying Bride, but was turned down as the band had just filled the position. Upon informing the band he was also a violin and keyboard player, he was hired as a session musician, before becoming the band's permanent violinist and keyboardist.  - Mark Alan Kelso (born July 23, 1963 in Pittsburgh, Pennsylvania) is a former American football player and current broadcaster. He was a member of the Bills teams that appeared in four consecutive Super Bowls from 1990-1993, and currently serves as the color commentator for the Buffalo Bills Radio Network.  - "Children of the Grave" is a song by Black Sabbath from their 1971 album "Master of Reality". The song lyrically continues with the same anti-war themes brought on by "War Pigs" and "Electric Funeral" from "Paranoid", adding in Geezer Butler's pacifist ideals of non-violent civil disobedience. Two previously unreleased versions of this song are released on the deluxe edition of "Master of Reality". The first is a version with alternate lyrics, the second an instrumental version.  - Doom metal is an extreme style of heavy metal music that typically uses slower tempos, low-tuned guitars and a much "thicker" or "heavier" sound than other metal genres. Both the music and the lyrics intend to evoke a sense of despair, dread, and impending doom. The genre is strongly influenced by the early work of Black Sabbath, who formed a prototype for doom metal with songs such as "Black Sabbath", "Children of the Grave", "Electric Funeral" and "Into the Void". During the first half of the 1980s, a number of bands from England (Pagan Altar, Witchfinder General), the United States (Pentagram, Saint Vitus, Trouble) and Sweden (Candlemass, Count Raven) defined doom metal as a distinct genre.  - Cryptal Darkness were an Australian doom metal band featuring Mark Kelson , now of The Eternal & InSomnius Dei and for a short period , former My Dying Bride / Cradle of Filth member , Martin Powell .  - Black Sabbath are an English rock band, formed in Birmingham in 1968, by guitarist and main songwriter Tony Iommi, bassist and main lyricist Geezer Butler, singer Ozzy Osbourne, and drummer Bill Ward. The band have since experienced multiple line-up changes, with guitarist Iommi being the only constant presence in the band through the years. Originally formed as a blues rock band, the group soon adopted the Black Sabbath moniker and began incorporating occult themes with horror-inspired lyrics and tuned-down guitars. Despite an association with these two themes, Black Sabbath also composed songs dealing with social instability, political corruption, the dangers of drug abuse and apocalyptic prophecies of the horrors of war.  - Sheffield is a city and metropolitan borough in South Yorkshire, England. Historically part of the West Riding of Yorkshire, its name derives from the River Sheaf, which runs through the city. With some of its southern suburbs annexed from Derbyshire, the city has grown from its largely industrial roots to encompass a wider economic base. The population of the City of Sheffield is and it is one of the eight largest regional English cities that make up the Core Cities Group. Sheffield is the third largest English district by population. The metropolitan population of Sheffield is 1,569,000.  - South Yorkshire is a metropolitan county in England. It is the southernmost county in the Yorkshire and the Humber region and had a population of 1.34 million in 2011. It has an area of and consists of four metropolitan boroughs, Barnsley, Doncaster, Rotherham and Sheffield. South Yorkshire was created on 1 April 1974 as a result of the Local Government Act 1972 with Barnsley as its county town.    What entity does 'cryptal darkness' has the relation 'inception' with?
A:
1993