Question: What is the name of the castle in the headquarters of the company that employs Arna Selznick?

Context paragraphs:
paragraph_text: Children of the Street (German: Kinder der Straße) is a 1929 German silent film directed by Carl Boese and starring Lissy Arna, Heinrich George and Rudolf Biebrach.
title: Children of the Street
paragraph_text: Gone with the Wind is a 1939 American epic historical romance film adapted from Margaret Mitchell's 1936 novel of the same name. The film was produced by David O. Selznick of Selznick International Pictures and directed by Victor Fleming. Set in the American South against the backdrop of the American Civil War and Reconstruction era, the film tells the story of Scarlett O'Hara, the strong - willed daughter of a Georgia plantation owner, from her romantic pursuit of Ashley Wilkes, who is married to his cousin, Melanie Hamilton, to her marriage to Rhett Butler. The leading roles are portrayed by Vivien Leigh (Scarlett), Clark Gable (Rhett), Leslie Howard (Ashley), and Olivia de Havilland (Melanie).
title: Gone with the Wind (film)
paragraph_text: Gowran Castle is located in the centre of Gowran, County Kilkenny, Ireland. The castle is a manor house and was fully restored between 2013 and 2014.
title: Gowran Castle
paragraph_text: The Vyshnivets Palace () or the Wiśniowiecki Palace () is located in the urban-type settlement of Vyshnivets (near the city of Zbarazh) in Ternopil Oblast of western Ukraine. Historically, it was the main seat of the Wiśniowiecki princely family which takes its name from this castle.
title: Vyshnivets Palace
paragraph_text: Katzenstein Castle is one of the oldest remaining Hohenstaufen castles in Germany. It is located in a borough that shares its name with the castle in the Dischingen municipality of the Heidenheim district of Baden-Württemberg. The castle is open to visitors and contains several dining rooms as well as hotel rooms.
title: Katzenstein Castle
paragraph_text: Alamnagar (community development block) is one of the administrative divisions of Madhepura district in the Indian state of Bihar. The block headquarters are located at a distance of 58 km from the district headquarters, namely, Madhepura. The name of Alamnagar is named for Shah Alamgir.
title: Alamnagar
paragraph_text: Cork City is at the heart of industry in the south of Ireland. Its main area of industry is pharmaceuticals, with Pfizer Inc. and Swiss company Novartis being big employers in the region. The most famous product of the Cork pharmaceutical industry is Viagra. Cork is also the European headquarters of Apple Inc. where over 3,000 staff are involved in manufacturing, R&D and customer support. Logitech and EMC Corporation are also important IT employers in the area. Three hospitals are also among the top ten employers in the city (see table below).
title: Cork (city)
paragraph_text: The German Castles Association () or DBV is dedicated to the conservation of historic defensive and residential buildings as witnesses of history and culture and has its headquarters at Marksburg Castle above Braubach on the Rhine. It owns the organisation known as the European Castles Institute ("Europäisches Burgeninstitut") or (EBI) whose library and archives are housed in Philippsburg Palace in Braubach.
title: German Castles Association
paragraph_text: New Haven's economy originally was based in manufacturing, but the postwar period brought rapid industrial decline; the entire Northeast was affected, and medium-sized cities with large working-class populations, like New Haven, were hit particularly hard. Simultaneously, the growth and expansion of Yale University further affected the economic shift. Today, over half (56%) of the city's economy is now made up of services, in particular education and health care; Yale is the city's largest employer, followed by Yale – New Haven Hospital. Other large employers include St. Raphael Hospital, Smilow Cancer Hospital, Southern Connecticut State University, Assa Abloy Manufacturing, the Knights of Columbus headquarters, Higher One, Alexion Pharmaceuticals, Covidien and United Illuminating. Yale and Yale-New Haven are also among the largest employers in the state, and provide more $100,000+-salaried positions than any other employer in Connecticut.[citation needed]
title: New Haven, Connecticut
paragraph_text: 788 Hohensteina is a main-belt asteroid discovered on April 4, 1914, by Franz Kaiser at Heidelberg-Königstuhl State Observatory. Named for castle Hohenstein located in the Taunus mountains.
title: 788 Hohensteina
paragraph_text: Eidsvåg Church () is a parish church in Bergen municipality in Hordaland county, Norway. It is located in the Eidsvåg neighborhood in the city of Bergen. The church is part of the Eidsvåg parish in the Arna og Åsane deanery in the Diocese of Bjørgvin. The large, white, concrete church was built in 1981 by the architectural firm "Lund + Slaatto Arkitekter". The church is a large cube shape, and it seats 300 people, and the main sanctuary is expandable up to 550 people.
title: Eidsvåg Church
paragraph_text: Cinematographer Lee Garmes began the production, but on March 11, 1939 -- after a month of shooting footage that Selznick and his associates regarded as ``too dark ''-- was replaced with Ernest Haller, working with Technicolor cinematographer Ray Rennahan. Garmes completed the first third of the film -- mostly everything prior to Melanie having the baby -- but did not receive a credit. Most of the filming was done on`` the back forty'' of Selznick International with all the location scenes being photographed in California, mostly in Los Angeles County or neighboring Ventura County. Tara, the fictional Southern plantation house, existed only as a plywood and papier - mâché facade built on the Selznick studio lot. For the burning of Atlanta, new false facades were built in front of the Selznick backlot's many old abandoned sets, and Selznick himself operated the controls for the explosives that burned them down. Sources at the time put the estimated production costs at $3.85 million, making it the second most expensive film made up to that point, with only Ben - Hur (1925) having cost more.
title: Gone with the Wind (film)
paragraph_text: Arna Selznick is a Canadian director and artist, known for directing Nelvana's 1985 animated film "The Care Bears Movie". Arna owns and operates a studio called Dancingmonkeys with her husband/partner John van Bruggen.
title: Arna Selznick
paragraph_text: Bucu or Buku is a hill island surrounded by the Trave and Wakenitz Rivers in Lübeck, Germany. It is also the name of a medieval Slavic castle, now ruined, on the island. Count Adolf II of Holstein founded Lübeck on the island in 1143. The "Burgkloster", or fortified monastery, of Lübeck is located atop the ruins of Bucu. "Bucu" is also the name of a hill.
title: Bucu
paragraph_text: Casa Loma (Spanish for ``Hill House '') is a Gothic Revival style mansion and garden in midtown Toronto, Ontario, Canada, that is now a historic house museum and landmark. It was constructed from 1911 to 1914 as a residence for financier Sir Henry Pellatt. The architect was E. J. Lennox, who designed several other city landmarks. Casa Loma sits at an elevation of 140 metres (460 ft) above sea level.
title: Casa Loma
paragraph_text: Turner is currently a professor for the Classical Animation program at Sheridan College in Oakville. Previously she taught for Max the Mutt Animation School in Toronto. She will teach the fifth year of the Animex (Animation Exploration) workshop at Visual Arts Brampton Creative Studio.
title: Natalie Turner
paragraph_text: On July 26, Truman mandated the end of hiring and employment discrimination in the federal government, reaffirming FDR's order of 1941.:40 He issued two executive orders on July 26, 1948: Executive Order 9980 and Executive Order 9981. Executive Order 9980, named Regulations Governing for Employment Practices within the Federal Establishment, instituted fair employment practices in the civilian agencies of the federal government. The order created the position of Fair Employment Officer. The order "established in the Civil Service Commission a Fair Employment Board of not less than seven persons." Executive Order 9981, named Establishing the President's Committee on Equality of Treatment and Opportunity in the Armed Services, called for the integration of the Armed Forces and the creation of the National Military Establishment to carry out the executive order.
title: Affirmative action in the United States
paragraph_text: Tunes is a village in Bergen municipality, Norway. It is a part of the urban area Indre Arna, which has a population of 6,166.
title: Tunes, Norway
paragraph_text: The Krimulda Castle () is located just outside Sigulda, Sigulda municipality, Latvia and is a tourist attraction. The castle dates from the 14th century and was destroyed in a war in 1601.
title: Krimulda Castle
paragraph_text: The museum's main location is the Old Castle in Stuttgart. The nearby granary and the cellar of the New Castle also contain parts of the collections as well as Waldenbuch Castle outside of Stuttgart.
title: Landesmuseum Württemberg

Reasoning steps:
Arna Selznick >> employer >>>> Nelvana
Nelvana >> headquarters location >>>> Toronto
what is the name of the castle in Toronto >>>> Casa Loma

Answer: spans: Casa Loma