Question: Princess Stephanie of Windisch-Graetz's mother was a member of what political party?

Context paragraphs:
Tamil Arasu Kazhagam: Tamil Arasu Kazhagam (Association for Tamil Autonomy) (Tamil: தமிழ் அரசு கழகம் ) was an Indian political party founded by M. P. Sivagnanam (Ma.  Po.  Si) in Tamil Nadu.  It was established as an association in 1946.  Its goals were to pressurize the Indian National Congress Government of the Madras Presidency to increase the use of Tamil in administration and education, to create an autonomous Tamil state out of a composite Madras Presidency and to soften the pro-Hindi stance of the Congress.  The association was allied with the Congress during 1946-54 and worked against the Dravidian Movement.  However, it grew closer to the Dravida Munnetra Kazhagam (DMK) over time.  During 1946-54, Sivagnanam was a member of the Congress.  He left the Congress in 1954 and turned the Tamil Arasu Kazhagam into an independent political party.  During 1957-60, it was involved in various protests over the drawing of state boundaries when Andhra Pradesh split from the composite Madras State.  It eventually became a part of DMK's electoral alliance in the 1967 assembly elections.  It was also involved in the movements to change the name of the state from Madras State to Tamil Nadu and to promote the use of Tamil over Sanskrit for conducting "Archanai" (Offerings to God) in Hindu temples.  In the 1967 elections, two candidates of the party (including Sivagnanam) were elected to the assembly contesting under DMK's "Rising Sun" Symbol.  The party was also an DMK ally in the 1971 assembly elections.  In 1972, it opposed the DMK chief minister M. Karunanidhi's decision to scrap prohibition laws and switched its allegiance to DMK's splinter group - the M. G. Ramachandran led Anna Dravida Munnetra Kazhagam (ADMK).  The party did not directly contest in elections after 1971 and Sivagnanam was nominated to the Tamil Nadu Legislative Council in 1972.  He remained as the member of the legislative council till its disbandment in 1986.  The party stopped functioning after Sivagnanam's death in 1995.

National Bolshevik Party: The National Bolshevik Party (NBP, Russian: Национал-большевистская партия, НБП , also known as the Nazbols, Russian: Нацболы ) operated from 1994 to 2007 as a Russian political party with a political program of National Bolshevism.  The NBP became a prominent member of The Other Russia coalition of opposition parties.  Russian courts banned the organization: it never officially registered as a political party.  In 2010, its leader, Eduard Limonov, founded a new political party, The Other Russia.  There have been smaller NBP groups in other countries.

Croatian Democratic Union: The Croatian Democratic Union (Croatian: "Hrvatska demokratska zajednica" or HDZ) is a conservative political party and the main centre-right political party in Croatia.  It is one of the two major contemporary political parties in Croatia, along with the centre-left Social Democratic Party (SDP).  It is currently the largest party in the Sabor with 55 seats.  The HDZ ruled Croatia from 1990 after the country gained independence from Yugoslavia until 2000 and, in coalition with junior partners, from 2003 to 2011 as well as since 2016.  The party is a member of the European People's Party (EPP).

Centre Party (Turkey): The Centre Party (Turkish: "Merkez Parti") is a political party in Turkey formed on 2 June 2014 by Abdurrahim Karslı.  The party was the result of the politicisation of the People's Voice Movement, with attempts to create a political party beginning in 2011.  The party is claims to be liberal, but has been accused of being affiliated with exiled cleric Fethullah Gülen.  Despite Karslı's claims that up to 15 smaller political parties were thinking of merging with the party amongst talk of MP defections, it has no seats in the National Assembly, after it received 0.05% of the vote in the June 2015 election and did not contest the subsequent November 2015 election.  It was previously represented by a single member in the parliament; Ercan Cengiz who resigned from the Republican People's Party (CHP) on 25 January 2015.

Andy Nye: Andy Dane Nye (born 8 April 1959, in London, England) is an English musician, songwriter and record producer, as well as being a member of the rock band The Michael Schenker Group at their peak in the 1980s.  During a long and productive career he has played keyboards for Sheena Easton, Barbara Dickson, Toyah Willcox, Chris Farlowe, Gerard Kenny, Dennis Waterman, Princess Stephanie of Monaco, Jahn Teigen, The Kick, After Hours and Mainland.  His songs have been recorded by artists such as Roger Daltrey, Asia, The Michael Schenker Group, Ten Years After, Chris Farlowe, John Entwistle, Colin Blunstone and The Zombies.

Archduchess Elisabeth Marie of Austria: Archduchess Elisabeth Marie of Austria (Elisabeth Maria Henriette Stephanie Gisela; 2 September 1883 – 16 March 1963) was the only child of Rudolf, Crown Prince of Austria and Princess Stéphanie of Belgium, and a granddaughter of Emperor Franz Joseph I of Austria and King Leopold II of the Belgians.  She was known to the family as "Erzsi", a diminutive of her name in Hungarian.  Later nicknamed "The Red Archduchess", she was famous for becoming a socialist and a member of the Austrian Social Democratic Party.

Liberal Egyptian Party: The Liberal Egyptian Party (Egyptian Arabic: الحزب المصري الليبرالي‎ ‎ , El Hezb El Masri El Librali ), formerly Mother Egypt Party, was a liberal and secular political party in Egypt advocating democracy and patriotism.  This liberal party used to be a political party in Egypt until the merger with another liberal party, the Egyptian Democratic Party, to the Egyptian Social Democratic Party on 29 March 2011.

Princess Stephanie of Windisch-Graetz: Princess Stéphanie of Windisch-Graetz (April 4, 1909 in Ploskovice, Bohemia – May 29, 2005 in Uccle, Belgium) was the daughter of Prince Otto Weriand of Windisch-Graetz (1873–1952) and Archduchess Elisabeth Marie of Austria (1883–1963), only child of Crown Prince Rudolf of Austria and Princess Stéphanie of Belgium.  She was the great-grandchild of Emperor Franz-Joseph and Empress Elisabeth ('Sissi') of Austria.  She was also the great-grandchild of King Leopold II of Belgium.

Boerestaat Party: The Boerstaat Party (English: "Boer State Party" ) is a right wing South African political party founded on 30 September 1986 by the late Robert van Tonder.  It was never officially registered as a political party because it was unable to rally 500 persons under one roof, a requirement under South African electoral law for official political party status.  It was never represented in the South African Parliament, neither in the apartheid era nor after democratisation.  In 1989, it joined the Afrikaner Weerstandsbeweging (AWB) in declaring support for Jaap Marais, the leader of the Herstigte Nasionale Party and has worked with the HNP on occasion since.  The party was a charter member of the Afrikaner Volksfront coalition group.  It has also operated with the paramilitary group, the "Boere Weerstandsbeweging" (Boer Resistance Movement) led by Andrew Ford.

Green Wind: Green Wind was a left-wing political party in Japan.  It opposed the Trans-Pacific Partnership and October 2012 Consumption Tax Hike.  It was founded as a parliamentary group in July 2012, and as a political party in November 2012 when Representative Makoto Yamazaki left the Democratic Party and joined the group.  On November 17, 2012, the party obtained its second member of the lower house, the House of Representatives, when former Democratic Party Representative Eriko Fukuda joined the party.  In 2013, Tomoko Abe, the last remaining member of Tomorrow Party of Japan, joined Green Wind.  However, on December 31, 2013, the party was dissolved.

Supporting paragraphs: Princess Stephanie of Windisch-Graetz Archduchess Elisabeth Marie of Austria
Answer: Austrian Social Democratic Party