Question: The city where Derrick Spencer was born was officially recognised as one of the New7Wonders Cities in what year?

Context paragraphs:
Aldridge School: Aldridge School is a mixed secondary school and sixth form with academy status located in Aldridge, in the Metropolitan Borough of Walsall in the West Midlands, England.  The other secondary school in Aldridge is St Francis of Assisi Catholic Technology College.  Although not officially recognised as such, it has the unofficial status of a Specialist Music College, as the school does offer a music scholarship to around 20 students per year.  The school is also recognised as a Science College.  The current headmaster is Mr David Mountney.  Each student is assigned a House upon entering the school which helps to build confidence and offers care and competition opportunities.

Derrick Spencer: Derrick Spencer (born May 10, 1982 in Durban, KwaZulu-Natal) is a South African football (soccer) player who plays as a defender or midfielder for Bidvest Wits in the Premier Soccer League.

Sid Smith (boxer): Sid Smith (born 2 February 1889 in Bermondsey, England, died 28 April 1948) was an English flyweight boxer of Jewish heritage.  He was the first officially recognised British flyweight champion, and was also recognised by the International Boxing Union as the World flyweight champion.

List of cities in Mecklenburg-Vorpommern: In the German state of Mecklenburg-Western Pomerania (German: "Mecklenburg-Vorpommern") there are 84 officially recognised towns and cities.

Durban: Durban (Zulu: "eThekwini" , from "itheku" meaning "bay/lagoon") is the largest city in the South African province of KwaZulu-Natal.  Durban's metropolitan municipality ranks third among the most populous urban areas in South Africa after Johannesburg and Cape Town.  It is also the second most important manufacturing hub in South Africa after Johannesburg.  It forms part of the eThekwini Metropolitan Municipality.  Durban is famous for being the busiest port in South Africa.  It is also seen as one of the major centres of tourism because of the city's warm subtropical climate and extensive beaches.  The municipality, which includes neighbouring towns, has a population of almost 3.5 million, making the combined municipality one of the biggest cities on the Indian Ocean coast of the African continent.  It is the largest city in KwaZulu-Natal which is the 2nd most populous province in South Africa.  It has the highest number of dollar millionaires added per year of any South African city with the number rising 200 per cent between 2000 and 2014.  In May 2015, Durban was officially recognised as one of the New7Wonders Cities together with Vigan, Doha, La Paz, Havana, Beirut, and Kuala Lumpur.

Yao people: The Yao people (its majority branch is also known as Mien; ; Vietnamese: "người Dao" ) is a government classification for various minorities in China and Vietnam.  They are one of the 55 officially recognised ethnic minorities in China and reside in the mountainous terrain of the southwest and south.  They also form one of the 54 ethnic groups officially recognised by Vietnam.  In the last census in 2000, they numbered 2,637,421 in China and roughly 470,000 in Vietnam.

Brett Lee: Brett Lee (born 8 November 1976) is a former Australian international cricketer, who played all three formats of the game.  During his international career, Lee was recognised as one of fastest bowlers in the world of cricket along with Shoaib Akhtar.  He is known for his consistency of pace, going over 150 km/h throughout his career.  His quickest delivery was 161.8 km/h in a test match against the West Indies in 2002, but because they were playing in a charity match, it was not officially recognised as the fastest delivery ever.  After that the world record for the fastest delivery ever is held by Shoaib Akhtar at 161.4 km/h .  Lee's quickest delivery in ODIs is 161.1 km/h playing against New Zealand in 2005.  He is also widely regarded as one of the best pace bowlers ever to have played the sport.

Blood-Rooted: Blood-Rooted is an album by Sepultura, released on June 3, 1997.  It was a collection of unreleased tracks, b-sides, remixes, and live recordings.  It was also the last officially recognised Sepultura album featuring original singer Max Cavalera, who left in December 1996 amid a dispute regarding the band's management.  Cavalera was replaced by American singer Derrick Green in 1997.

Kiyomizu-dera: Kiyomizu-dera (清水寺 ) , officially Otowa-san Kiyomizu-dera (音羽山清水寺 ) , is an independent Buddhist temple in eastern Kyoto.  The temple is part of the Historic Monuments of Ancient Kyoto (Kyoto, Uji and Otsu Cities) UNESCO World Heritage site.  It was one of 20 finalists for the New7Wonders of the World.

Sheffield United F.C. Player of the Year: The Sheffield United F.C. Player of the Year is an annual award presented to players of Sheffield United on behalf of the club's fans to recognise an outstanding contribution to the previous season.  First presented in 1967 the award was organised by the Official Supporters Club and voted for by its members.  The award was officially recognised and commemorated by the club and since the late 1990s has been presented at a gala dinner.  From around 2000 the award was widened to include voting from the general fanbase and various other awards have also been presented including Young Player of the Year and Goal of the Season.

Supporting paragraphs: Derrick Spencer Durban
Answer: 2015