Question: What is the GDP of the city where Spectre was filmed, after its filming in the city that once headquartered the political party of Antonio Gramsci?

full_context: Document 1: Spectre (2015 film): A brief shoot at London's City Hall was filmed on 18 April 2015, while Mendes was on location. On 17 May 2015 filming took place on the Thames in London. Stunt scenes involving Craig and Seydoux on a speedboat as well as a low flying helicopter near Westminster Bridge were shot at night, with filming temporarily closing both Westminster and Lambeth Bridges. Scenes were also shot on the river near MI6's headquarters at Vauxhall Cross. The crew returned to the river less than a week later to film scenes solely set on Westminster Bridge. The London Fire Brigade was on set to simulate rain as well as monitor smoke used for filming. Craig, Seydoux, and Waltz, as well as Harris and Fiennes, were seen being filmed. Prior to this, scenes involving Fiennes were shot at a restaurant in Covent Garden. Filming then took place in Trafalgar Square. In early June, the crew, as well as Craig, Seydoux, and Waltz, returned to the Thames for a final time to continue filming scenes previously shot on the river.
Document 2: New class: A theory of the new class was developed by Milovan Đilas the Vice President of the Federal People's Republic of Yugoslavia under Josip Broz Tito, who participated with Tito in the Yugoslav People's Liberation War, but was later purged by him as Đilas began to advocate democratic and egalitarian ideals (which he believed were more in line with the way socialism and communism should look like). However, there were also personal antagonisms between the two men, and Tito felt Đilas undermined his leadership. The theory of the new class can be considered to oppose the theories of certain ruling Communists, such as Joseph Stalin, who argued that their revolutions and / or social reforms would result in the extinction of any ruling class as such. It was Đilas' observation as a member of a Communist government that Party members stepped into the role of ruling class -- a problem which he believed should be corrected through revolution. Đilas' completed his primary work on his new class theory in the mid-1950s. While Đilas was in prison, it was published in 1957 in the West under the title The New Class: An Analysis of the Communist System.
Document 3: Jiří Pelikán (politician): Jiří Pelikán (7 February 1923 in Olomouc, Czechoslovakia – 26 June 1999 in Rome, Italy) was a Czechoslovakian journalist and member of parliament, then a member of the European Parliament for the Italian Socialist Party.
Document 4: L'Ordine Nuovo: L'Ordine Nuovo (Italian for "The New Order") was a weekly newspaper established on May 1, 1919, in Turin, Italy, by a group, including Antonio Gramsci, Angelo Tasca and Palmiro Togliatti, within the Italian Socialist Party. The paper was the successor of "La Città futura", a broadsheet newspaper. The founders of "L'Ordine Nuovo" were admirers of the Russian Revolution and strongly supported the immediate creation of soviets in Italy. They believed that existing factory councils of workers could be strengthened so that they could become the basis of a communist revolution. However, Amadeo Bordiga, who would become the founder of the Communist Party of Italy, criticised the plan as syndicalism, saying that soviets should only be created after Italy had come under communist control.
Document 5: Mexico City: Mexico City is one of the most important economic hubs in Latin America. The city proper (Federal District) produces 15.8% of the country's gross domestic product. According to a study conducted by PwC, Mexico City had a GDP of $390 billion, ranking it as the eighth richest city in the world after the greater metropolitan areas of Tokyo, New York City, Los Angeles, Chicago, Paris, London and Osaka/Kobe (and the richest in the whole of Latin America). Excluding the rest of the Mexican economy, Mexico City alone would rank as the 30th largest economy in the world. Mexico City is the greatest contributor to the country's industrial GDP (15.8%) and also the greatest contributor to the country's GDP in the service sector (25.3%). Due to the limited non-urbanized space at the south—most of which is protected through environmental laws—the contribution of the Federal District in agriculture is the smallest of all federal entities in the country. Mexico City has one of the world's fastest-growing economies and its GDP is set to double by 2020.
Document 6: Camilla Ravera: Ravera participated in the founding of the Italian Communist Party in 1921. She was General Secretary of the party from 1927 until 1930 following the arrest of Antonio Gramsci.
Document 7: Mexico City: Mexico City, or the City of Mexico (Spanish: Ciudad de México, American Spanish: (sjuˈða (ð) ðe ˈmexiko) (listen); abbreviated as CDMX, Nahuatl languages: Āltepētl Mēxihco), is the capital of Mexico and the most populous city in North America. Mexico City is one of the most important cultural and financial centres in the Americas. It is located in the Valley of Mexico (Valle de México), a large valley in the high plateaus in the center of Mexico, at an altitude of 2,240 meters (7,350 ft). The city has 16 boroughs.
Document 8: Spectre (2015 film): With filming completed in Rome, production moved to Mexico City in late March to shoot the film's opening sequence, with scenes to include the Day of the Dead festival filmed in and around the Zócalo and the Centro Histórico district. The planned scenes required the city square to be closed for filming a sequence involving a fight aboard a Messerschmitt-Bölkow-Blohm Bo 105 helicopter flown by stunt pilot Chuck Aaron, which called for modifications to be made to several buildings to prevent damage. This particular scene in Mexico required 1,500 extras, 10 giant skeletons and 250,000 paper flowers. Reports in the Mexican media added that the film's second unit would move to Palenque in the state of Chiapas, to film aerial manoeuvres considered too dangerous to shoot in an urban area.
Document 9: Mexico City: Mexico City, or the City of Mexico (Spanish: Ciudad de México  audio (help·info) American Spanish: [sjuˈða(ð) ðe ˈméxiko]; abbreviated as "CDMX"), is the capital of Mexico. As an "alpha" global city, Mexico City is one of the most important financial centers in the Americas. It is located in the Valley of Mexico (Valle de México), a large valley in the high plateaus at the center of Mexico, at an altitude of 2,240 metres (7,350 ft). The city consists of sixteen municipalities (previously called boroughs).
Document 10: Jiří Pernes: Between 1984-1990 he was director of the Historical Museum in Slavkov u Brna (Austerlitz), then between 1990-1992 he was director of the Moravské zemské muzeum in Brno. In 2011 he directed the Institute for the Study of Totalitarian Regimes. Jiří Pernes held lectures at the Masaryk University in Brno and at the Jan Evangelista Purkyně University in Ústí nad Labem.
Document 11: Ant (newspaper): Ant ('Oath') was a weekly leftwing publication in Turkey, which first appeared in 1967. "Ant" supported the Workers Party of Turkey (TİP), and sought to resolve the differences between the TİP and other sectors of the left. "Ant" stressed that the struggle for socialism and the struggle against imperialism had to be combined.
Document 12: Spectre (2015 film): Whilst filming in Mexico City, speculation in the media claimed that the script had been altered to accommodate the demands of Mexican authorities—reportedly influencing details of the scene and characters, casting choices, and modifying the script in order to portray the country in a "positive light"—in order to secure tax concessions and financial support worth up to $20 million for the film. This was denied by producer Michael G. Wilson, who stated that the scene had always been intended to be shot in Mexico as production had been attracted to the imagery of the Day of the Dead, and that the script had been developed from there. Production of Skyfall had previously faced similar problems while attempting to secure permits to shoot the film's pre-title sequence in India before moving to Istanbul.
Document 13: Jiří Dienstbier Jr.: Jiří Dienstbier Jr. is the son of Jiří Dienstbier Sr., former journalist and civil rights activist who became the first Minister of Foreign Affairs in the newly democratic Czechoslovakia, and Zuzana Dienstbierová, née Wíšová, a psychologist. His parents and his grandfather, Jaromír Wíšo, were signatories to the Charter 77 human rights declaration. Consequently, Dienstbier's family experienced intense political pressure from the Communist regime during the "Normalization" period after 1969. While Jiří Dienstbier Jr was 10 years old, his father was imprisoned for his work in a movement acting parallel to Charter 77, the Committee for the Defense of the Unjustly Prosecuted (; VONS).
Document 14: Willi Piecyk: Member of the European Parliament with the Social Democratic Party of Germany, part of the Socialist Group and sat on the European Parliament's Committee on Fisheries and its Committee on Transport and Tourism.
Document 15: Economy of Mexico: The economy of Mexico is the 13th largest in the world in nominal terms and the 11th largest by purchasing power parity, according to the International Monetary Fund. Since the 1994 crisis, administrations have improved the country's macroeconomic fundamentals. Mexico was not significantly influenced by the 2002 South American crisis, and maintained positive, although low, rates of growth after a brief period of stagnation in 2001. However, Mexico was one of the Latin American nations most affected by the 2008 recession with its Gross Domestic Product contracting by more than 6% in that year.
ground_truth: $390 billion
sub_queries: Antonio Gramsci >> member of political party Answer: Italian Socialist Party
Italian Socialist Party >> headquarters location Answer: Rome
Where did Spectre filming take place after Rome ? Answer: Mexico City
What is the GDP of Mexico City ? Answer: $390 billion