Question: What was the original purpose of the site, used now as a studio, where a hologram of Paul Harris is a permanent feature ?

Context paragraphs:
Object manipulation: Object manipulation is a form of dexterity play or performance in which one or more people physically interact with one or more objects.  Many object manipulation skills are recognised circus skills.  Other object manipulation skills are linked to sport, magic, and everyday objects or practices.  Many object manipulation skills use special props made for that purpose: examples include the varied circus props such as balls, clubs, hoops, rings, poi, staff, and devil sticks; magic props such as cards and coins; sports equipment such as nunchaku and footballs.  Any other object can also be used for manipulation skills.  Object manipulation with ordinary items may be considered to be object manipulation when the object is used out of its socially acknowledged context and used differently from its original purpose.

Red Tea: Red Tea is an English novel written by Paul Harris Daniel (born 1910).  It was published in Madras by Higginbothams in 1969.  The 2013 Tamil film Paradesi was based on it.  It is based on the experiences of tea plantation workers in the Madras Presidency during the British Raj.  It was translated into Tamil as "Eriyum Panikaadu" by Ira.  Murugavel.  Daniel was a medical doctor and had worked in a series of Assamese tea plantations as chief medical officer during 1941-65.  He also acted as a union organiser.  During that time, he had interviewed many workers there and obtained signed statements from them.  Later he used that material to write this novel.  Though a work of fiction detailing the lives of Karuppan and Valli, "Red Tea" was written with an "explicit documentary purpose".  It details how the Madras Planters Act of 1903 led to the poor conditions of plantation workers.  Debt bondage of the workers, their poor working conditions, their inability to escape their life are all captured in this novel.The Tamil film 'Paradesi' is based on this work.

In My Arms (Kylie Minogue song): "In My Arms" is a song recorded by Australian singer Kylie Minogue for her tenth studio album, "X" (2007).  The track was written by Minogue, Calvin Harris, Richard "Biff" Stannard, Paul Harris and Julian Peake.  It was produced by Calvin Harris and Stannard.  The song was released as the worldwide second single from the album on 15 February 2008, while it served as the third single in the United Kingdom, Australia and New Zealand.  It also made an appearance on her 2012 greatest hits album, "The Best of Kylie Minogue".  The song was introduced by Harris while she was recording in a studio in Brighton.

Tommy Robinson (activist): Stephen Christopher Yaxley-Lennon (born 27 November 1982), known by the pseudonym Tommy Robinson and also going by the names Andrew McMaster and Paul Harris, is a political activist and the co-founder and former spokesman and leader of the English Defence League (EDL) "street protest" movement.  He also founded the European Defence League, and for a short time in 2012 was joint party vice-chairman of the British Freedom Party.  He led the EDL from 2009 until 8 October 2013, when he was persuaded to leave the organisation and discuss alternative ways of tackling extremism with the think tank Quilliam.  He continued as an activist, and in 2015 became involved with the development of Pegida UK, a British chapter of the German-based Pegida organisation, presenting a stated purpose to counter the "Islamisation of our countries".

Warner Bros. Studios, Leavesden: Warner Bros.  Studios, Leavesden is an 80-hectare studio complex in Leavesden in Hertfordshire, in southeast England.  Formerly known as Leavesden Film Studios and still colloquially known Leavesden Studios or simply Leavesden, it is a film and media complex owned by Warner Bros. The studios and backlot were all retrofitted as the site's original purpose was as an aircraft factory and airfield called Leavesden Aerodrome, a centre of British aircraft production during World War II.  It is situated in Abbots Langley, near Watford, in southwest Hertfordshire.

New Haven District Campground: The New Haven District Campground, also known as the Plainville Campground, is a historic Methodist camp meeting site in Plainville, Connecticut.  Opened in 1865, the campground was used by Connecticut Methodists to partake in the 19th-century trend of religious and recreational camp meetings.  Despite their original purpose as revivalist gatherings, camp meetings became a popular leisure destination for the middle class in the 19th century due to their moral nature and affordability.  The campground consists of 89 cottages, built as permanent replacements for the site's original tents, which surround a central preaching area in the camp meeting's traditional circular pattern.  At the height of its popularity, the campsite had its own railroad station and spurred the local economy in what was at the time a rural area.  The campground lost its religious affiliation in 1957, though the cottages are still used as summer homes.

Stage (theatre): In theatre and performing arts, the stage (sometimes referred to as the deck in stagecraft) is a designated space for the performance of productions.  The stage serves as a space for actors or performers and a focal point (the screen in cinema theaters) for the members of the audience.  As an architectural feature, the stage may consist of a platform (often raised) or series of platforms.  In some cases, these may be temporary or adjustable but in theaters and other buildings devoted to such productions, the stage is often a permanent feature.

Paul Harris (choreographer): Paul Harris is an English choreographer, dance teacher and movement director in film, television and theatre.  His notable works include the famous laser scenes for Catherine Zeta-Jones in the movie "Entrapment", the BAFTA Award-winning "Bleak House" and the wand fight sequences in "Harry Potter and the Order of the Phoenix".  An interactive hologram of Harris is a permanent feature of the Warner Bros.  Studios, Leavesden where Harris is described by Warner Bros. as being "the world's only wand combat choreographer".

Spanish Fort Site (Holly Bluff, Mississippi): The Spanish Fort Site (22-SH-500) is an archaeological site in the Delta region of the U.S. state of Mississippi.  It is one of three major earthwork sites in the far southern portion of the Yazoo River valley, and it has been designated a historic site because of its archaeological value.  Despite its name, the site was not built by the Spanish, and its original purpose is believed to have been ceremonial, not martial.

Zwinger (fortification): A Zwinger (] ) is an open area between two defensive walls that is used for defensive purposes.  "Zwingers" were built in the Middle Ages and Early Modern Period to improve the defence of castles and town walls.  The term is German and usually left untranslated.  However, it is sometimes rendered as "outer courtyard" presumably referring to the subsequent role of a "Zwinger" as a castle's defences became redundant and it was converted into a palace or "schloss", however, this belies its original purpose as a form of killing ground for the defence.  The word is linked with "zwingen", "to force", perhaps because the "Zwinger" forced an enemy to negotiate it before assaulting the main defensive line.  Essenwein states that the ""main purpose of this feature was so that the besieging force could not reach the actual castle wall very easily with battering rams or belfries, but had to stop at the lower, outer wall; also that two ranks of archers, behind and above one another, could fire upon upon the approaching enemy""

Supporting paragraphs: Paul Harris (choreographer) Warner Bros. Studios, Leavesden
Answer: aircraft factory and airfield