Question: In what year was the complex where the 2005 World Matchplay was held first opened?

Context paragraphs:
2003 World Matchplay (darts): The 2003 World Matchplay was a darts tournament held in the Empress Ballroom at the Winter Gardens, Blackpool.  This was the fourth World Matchplay tournament to be sponsored by UK bookmaker Stan James.  The tournament ran from 27 July through 2 August 2003, and was won by Phil Taylor.

2008 World Matchplay (darts): The 2008 Stan James World Matchplay was the 15th annual staging of the tournament by the Professional Darts Corporation.  The tournament took place from Sunday 20 July to Saturday 26 July.  It was staged at the Winter Gardens in Blackpool.  World number three, James Wade went into the competition as the defending champion and managed to reach the final for the third year in a row, but was defeated by top seed Phil Taylor 18-9 who won his ninth World Matchplay championship.

2000 World Matchplay (darts): The 2000 World Matchplay was a darts tournament held in the Empress Ballroom at the Winter Gardens, Blackpool.  This was the first World Matchplay tournament to be sponsored by UK bookmaker Stan James.  The tournament ran from 23 July through 29 July 2000, and was won by Phil Taylor.

2005 World Matchplay (darts): The 2005 Stan James World Matchplay was the 12th staging of the major darts tournament by the Professional Darts Corporation.  It was held at the Winter Gardens, Blackpool between July 24 and July 30, 2005.

David Snell (golfer): David Snell (born 10 October 1933) is an English professional golfer.  He is remembered for winning the News of the World Matchplay in 1959, taking the first prize of £750.  He beat Harry Weetman 3&2 in the final.  Snell was unlucky not to make the 1959 Ryder Cup team.  In both 1957 and 1961 any British or Irish winner of the News of the World Matchplay received an automatic place in the team.  Unfortunately he performed badly in the last event before the final selection, the Dunlop Masters, and was not chosen.

Colin Lloyd: Colin Edward Lloyd (born 7 August 1973 in Colchester, Essex), nicknamed Jaws, is an English former professional darts player on the Professional Darts Corporation circuit.  He is a former world number one ranked player and he has won two major television titles in the PDC – the 2004 World Grand Prix and the 2005 World Matchplay.  His entrance music was "Monster" by The Automatic.

1994 World Matchplay (darts): The 1994 World Matchplay was a darts tournament held in the Empress Ballroom at the Winter Gardens, Blackpool.  This was the first World Matchplay tournament to be held at Winter Gardens, and was sponsored by Malaysian automaker Proton.  The tournament was won by Larry Butler.

1995 World Matchplay (darts): The 1995 Websters World Matchplay was the second annual World Matchplay darts tournament organised by the World Darts Council (WDC, which became the Professional Darts Corporation in 1997).  The Winter Gardens, Blackpool played host to the event for the second year running.

Winter Gardens, Blackpool: The Winter Gardens is a large entertainment complex in the town centre of Blackpool, Lancashire, England.  It has twelve different venues, including a theatre, ballroom and conference facilities.  Opened in 1878, it is a Grade II* listed building, incorporating various elements built between 1875 and 1939.  It is operated by Blackpool Entertainment Company Limited, on behalf of Blackpool Council which purchased the property from Leisure Parcs Ltd as part of a £40 million deal in 2010.

2001 World Matchplay (darts): The 2001 World Matchplay was a darts tournament held in the Empress Ballroom at the Winter Gardens, Blackpool.  This was the second World Matchplay tournament to be sponsored by UK bookmaker Stan James.  The tournament ran from 29 July through 4 August 2001, and was won by Phil Taylor.

Supporting paragraphs: 2005 World Matchplay (darts) Winter Gardens, Blackpool
Answer: 1878