Question: On which island of New Zealand is the city where Diocletian is from located?

full_context: Document 1: New Zealand: New Zealand (Māori: Aotearoa ] ) is an island country in the southwestern Pacific Ocean. The country geographically comprises two main landmasses—the North Island (or "Te Ika-a-Māui"), and the South Island (or "Te Waipounamu")—and around 600 smaller islands. New Zealand is situated some 1500 km east of Australia across the Tasman Sea and roughly 1000 km south of the Pacific island areas of New Caledonia, Fiji, and Tonga. Because of its remoteness, it was one of the last lands to be settled by humans. During its long period of isolation, New Zealand developed a distinct biodiversity of animal, fungal and plant life. The country's varied topography and its sharp mountain peaks, such as the Southern Alps, owe much to the tectonic uplift of land and volcanic eruptions. New Zealand's capital city is Wellington, while its most populous city is Auckland.
Document 2: New Plymouth: New Plymouth (Māori: "Ngāmotu" ) is the major city of the Taranaki Region on the west coast of the North Island of New Zealand. It is named after the English city of Plymouth from where the first English settlers migrated. The New Plymouth District includes New Plymouth City and several smaller towns. The New Plymouth District is the 10th largest district (out of 67) in New Zealand, and has 1.7 percent of New Zealand's population. The district has a population of 74,184 – about two-thirds of the total population of the Taranaki Region. This includes New Plymouth City (), Waitara (6,483), Inglewood (3,380), Oakura (1,359), Okato (561) and Urenui (429).
Document 3: Shihad: Shihad are a rock band from New Zealand, formed in 1988. The band consists of Jon Toogood (lead vocals, rhythm guitar), Phil Knight (lead guitar, synthesiser, backing vocals), Karl Kippenberger (bass guitar, backing vocals), and Tom Larkin (drums, backing vocals, samplers). During their recording career, Shihad have produced five number-one studio albums, holding the title for most number one records for any New Zealand artist, alongside Hayley Westenra, and three top-ten singles in New Zealand.
Document 4: Auckland City: Auckland City is the part of Auckland urban area covering the isthmus and most of the islands of the Hauraki Gulf. The core of Auckland City is the Auckland CBD, a major financial and commercial centre, surrounded by many suburbs. It was formerly the name of a local authority district that was governed by Auckland City Council; it lay within the wider Auckland Region, which was governed by Auckland Regional Council. Auckland City was disestablished as a local government district on 1 November 2010, when Auckland City Council was amalgamated with other councils of the Auckland Region into the new Auckland Council.
Document 5: New Zealand top 50 albums of 2015: This is a list of the top-selling albums in New Zealand for 2015 from the Official New Zealand Music Chart's end-of-year chart, compiled by Recorded Music NZ. The chart includes 12 albums by New Zealand artists, including two albums by popera trio Sole Mio. The chart also includes 12 albums that featured in the New Zealand top 50 albums of 2014.
Document 6: Wellington: Wellington (Māori: "Te Whanganui-a-Tara" ) is the capital city and second most populous urban area of New Zealand, with 405,000 residents. It is at the south-western tip of the North Island, between Cook Strait and the Rimutaka Range. Wellington is the major population centre of the southern North Island and is the administrative centre of the Wellington Region, which also includes the Kapiti Coast and Wairarapa. It is the world's windiest city, with an average wind speed of over 26 km/h, and the world's southernmost capital of a sovereign state.
Document 7: Demographics of New Zealand: The demographics of New Zealand encompass the gender, ethnic, religious, geographic, and economic backgrounds of the /1000000 round 1 million people living in New Zealand. New Zealanders, informally known as "Kiwis", predominantly live in urban areas on the North Island. The five largest cities are Auckland (with one-third of the country's population), Christchurch (in the South Island, the largest island of the New Zealand archipelago), Wellington, Hamilton and Tauranga. Few New Zealanders live on New Zealand's smaller islands. Waiheke Island (near Auckland) is easily the most populated smaller island with 9,150 residents, while Great Barrier Island, the Chatham and Pitt Islands and Stewart Island each have populations below 1,000. New Zealand is part of a realm and most people born in the realm's external territories of Tokelau, the Ross Dependency, the Cook Islands and Niue are entitled to New Zealand passports. In 2006, more people who identified themselves with these islands lived in New Zealand than on the Islands themselves.
Document 8: Diocletian (band): Diocletian was a New Zealand extreme metal band from Auckland. Formed in 2004, the band's final lineup featured Atrociter (guitar, vocals), L. Muir (guitar, vocals, bass), C. Sinclair (drums) and J. Baldwin (guitars). The band's 2015 album, "Gesundrian", was featured as number 15 on Pitchfork's list of "The Best Metal Albums of 2014".
Document 9: Auckland: Auckland ( ) is a city in New Zealand's North Island. Auckland is the largest urban area in the country, with an urban population of around 1,495,000 . It is located in the Auckland Region—the area governed by Auckland Council—which includes outlying rural areas and the islands of the Hauraki Gulf, resulting in a total population of 1,614,300 . A diverse and multicultural city, Auckland is home to the largest Polynesian population in the world. The Māori language name for Auckland is "Tāmaki " or "Tāmaki-makau-rau ", meaning "Tāmaki with a hundred lovers", in reference to the desirability of its fertile land at the hub of waterways in all directions. It has also been called "Ākarana", the Māori pronunciation of the English name.
Document 10: Demoniac: Demoniac were a heavy metal band from New Zealand formed in Wellington in 1993 by singer and bass player Lindsay Dawson, guitarist Sam Totman and Drummer Steve Francis. They later moved to London, UK. Three of the members went on to form DragonForce. Their rather unusual musical style has often been labeled as "blackened power metal".
Document 11: New Zealand top 50 albums of 2014: This is a list of the top-selling albums in New Zealand for 2014 from the Official New Zealand Music Chart's end-of-year chart, compiled by Recorded Music NZ. The chart includes six albums by New Zealand artists, including two albums by brother-sister duo Broods. The chart also includes 13 albums that featured in the New Zealand top 50 albums of 2013. The 2014 chart was the first to include online streaming as well as sales data.
Document 12: Hauraki Gulf: The Hauraki Gulf / Tīkapa Moana is a coastal feature of the North Island of New Zealand. It has an area of 4000 km², and lies between, in anticlockwise order, the Auckland Region, the Hauraki Plains, the Coromandel Peninsula, and Great Barrier Island. Most of the gulf is part of the Hauraki Gulf Marine Park.
Document 13: Dio discography: The following is a comprehensive discography of Dio, an American heavy metal band led by vocalist Ronnie James Dio. Dio was formed in 1982 after Ronnie James Dio and drummer Vinny Appice left Black Sabbath. The band went through frequent personnel changes. The final line-up consisted of Dio (vocals), Craig Goldy (guitars), Rudy Sarzo (bass), Simon Wright (drums) and Scott Warren (keyboards).
Document 14: List of Danzig band members: The list of Danzig band members consists of the original lineup of Glenn Danzig (vocals), John Christ (guitar), Eerie Von (bass) and Chuck Biscuits (drums), spanned seven years and four albums. The lineup first changed in 1994, when Biscuits was fired from the band due to royalty disagreements. After he was rejected upon asking to return, and, according to a special issue of "Kerrang! magazine", former Nirvana drummer Dave Grohl turned down an approach from them, he was replaced by Joey Castillo, who made his first public appearance as a member of Danzig at an in-store signing the day of the fourth album's release. After promoting the fourth album, John Christ and Eerie Von both left the band in July 1995, leaving Glenn Danzig as the only remaining original member of the band. Many lineup changes happened since; guitarists included Dave Kushner, Jeff Chambers, Todd Youth, Joe Fraulob and Kenny Hickey, bassists included Josh Lazie, Rob "Blasko" Nicholson, Howie Pyro and Jerry Montano and drummers included Bevan Davies and Karl Rosqvist. The current Danzig line-up consists of Glenn Danzig on vocals, Tommy Victor on guitar, Steve Zing on bass and Joey Castillo on drums.
Document 15: Auckland City Council: Auckland City Council was the local government authority for Auckland City, New Zealand, from 1871 to 1 November 2010, when it was amalgamated into the Auckland Council. It was an elected body representing the 404,658 residents (2006 census) of the city, which included some of the Hauraki Gulf islands, such as Waiheke Island and Great Barrier Island. It was chaired by the Mayor of Auckland City.
ground_truth: North Island