Question: Which long-time mistress of King Charles II of England occupied a townhouse in Pall Mall, London?

Context paragraphs:
Beehive Building, Bendigo: The Beehive Building, also known as the Sandhurst Mining Exchange, is a building on Pall Mall in Bendigo, a regional city in the Australian state of Victoria.  The buildings modern day successor is the Bendigo Stock Exchange.  The building was designed by noted architect Charles Webb and contains the former Bendigo Mining Exchange.  The Beehive building is an important part of Bendigo's Pall Mall street-scape, which one of the most notable Victorian period street-scapes remaining in Victoria.  The Greater Bendigo Council is currently exploring options to return the building to its former glory.

77–78 Pall Mall: 77–78 Pall Mall is a grade II listed building in Pall Mall, London.  It is currently used as a business centre.

D. M. Sutherland: D. M. Sutherland (?  – 13 December 1951) was a British journalist and editor.  Born in Edinburgh, he attended George Watson's College and University of Edinburgh.  He was the London editor of the "Manchester Daily Dispatch" before assuming the editorship of the "Sheffield Daily Telegraph".  He was named editor of "Evening Standard" in 1914 and served in that capacity for a year, leaving to take over as editor of the "Pall Mall Gazette".  Sutherland was the last editor of the "Pall Mall Gazette", serving in that position until the newspaper was incorporated into the "Evening Standard" in 1923.  He then left journalism to become the Secretary and Director of Propaganda for the Anti-Socialist and Anti-Communist Union.

British Institution: The British Institution (in full, the British Institution for Promoting the Fine Arts in the United Kingdom; founded 1805, disbanded 1867) was a private 19th-century society in London formed to exhibit the works of living and dead artists; it was also known as the Pall Mall Picture Galleries or the British Gallery.  Unlike the Royal Academy it admitted only connoisseurs, dominated by the nobility, rather than practicing artists to its membership, which along with its conservative taste led to tensions with the British artists it was intended to encourage and support.  In its gallery in Pall Mall the Institution held the world's first regular temporary exhibitions of Old Master paintings, which alternated with sale exhibitions of the work of living artists; both quickly established themselves as popular parts of the London social and artistic calendar.  From 1807 prizes were given to artists and surplus funds were used to buy paintings for the nation.

Nell Gwyn (disambiguation): Nell Gwyn (1650–1687) was a long-time mistress of King Charles II of England.

Pall Mall Restaurant: The Pall Mall Restaurant was a hostelry situated at Number 1 Cockspur Street, Westminster, London, just off Pall Mall and near Trafalgar Square.  The site was subsequently the offices of the White Star Line, and was then occupied by a Tex Mex restaurant, the Texas Embassy Cantina.  Currently the site is unused.

Pall Mall Budget: The Pall Mall Budget was a weekly magazine published in London from 1868 until 1920.  It was a weekly digest of articles from the "Pall Mall Gazette".  The full title was The Pall Mall Budget: a weekly collection of articles printed in the Pall Mall Gazette.  The "Pall Mall Budget" was re-launched in 1893 by William Waldorf Astor.  C. Lewis Hind was its editor from 1893 to 1895.

The Pall Mall Gazette: The Pall Mall Gazette was an evening newspaper founded in London on 7 February 1865 by George Murray Smith; its first editor was Frederick Greenwood.  In 1921, "The Globe" merged into "The Pall Mall Gazette", which itself was absorbed into the "Evening Standard" in 1923.

Nell Gwyn: Eleanor "Nell" Gwyn (2 February 1650 – 14 November 1687; also spelled "Gwynn", "Gwynne") was a long-time mistress of King Charles II of England and Scotland.  Called "pretty, witty Nell" by Samuel Pepys, she has been regarded as a living embodiment of the spirit of Restoration England and has come to be considered a folk heroine, with a story echoing the rags-to-royalty tale of Cinderella.  She was the most famous Restoration actress and possessed a prodigious comic talent.  Gwyn had two sons by King Charles: Charles Beauclerk (1670–1726); and James Beauclerk (1671–1680).

79 Pall Mall: 79 Pall Mall is a grade II listed building in Pall Mall, London.  It was designed by David Brandon for the Eagle Insurance Company in 1866–68.  There formerly stood on the site a brick townhouse occupied by Nell Gwyn after her retirement from the stage and a blue plaque notes the fact.

Supporting paragraphs: 79 Pall Mall Nell Gwyn
Answer: Nell Gwyn