Question: Who was in charge of the city where Ivan Moffat was born?

full_context: Document 1: Ian Ballantine: Born in New York City, the son of Stella Commins Ballantine (half-niece of anarchist Emma Goldman) and the Scottish actor and sculptor Edward James Ballantine, Ian Ballantine received his undergraduate degree from Columbia College and his graduate degree from the London School of Economics. His Master's thesis featured the possibilities of paperback printing.
Document 2: Mexico City: The first elected head of government was Cuauhtémoc Cárdenas. Cárdenas resigned in 1999 to run in the 2000 presidential elections and designated Rosario Robles to succeed him, who became the first woman (elected or otherwise) to govern Mexico City. In 2000 Andrés Manuel López Obrador was elected, and resigned in 2005 to run in the 2006 presidential elections, Alejandro Encinas being designated by the Legislative Assembly to finish the term. In 2006, Marcelo Ebrard was elected for the 2006–2012 period.
Document 3: Havana: The current mayor of Havana ("President of the People's Power Provincial Assembly") is Marta Hernández Romero, she was elected on March 5, 2011.
Document 4: Judah Waten: Born in Odessa to a Russian-Jewish family, Judah Waten arrived in Western Australia in 1914. He attended Christian Brothers' College, Perth and, moving to Melbourne in 1926, University High School, Melbourne. He joined the Communist Party of Australia while still at school. Between 1931 and 1933, he visited Europe, became engaged in left-wing political activities in England, and spent three months in Wormwood Scrubs Prison.
Document 5: Mohit Banerji: Mohit Banerji’s formative years were spent in West Bengal, having been educated at Midnapore Collegiate School followed by tertiary undergraduate study at the University of Calcutta. He travelled to London, United Kingdom to complete a Degree in Commerce at the London School of Economics, which he completed successfully in July, 1940. During this time, Mohit Banerji joined the Indian Students Group Movement. This group movement was formed in support of Socialist (Marxist) ideology, to protest against Colonial rule of India and counteract fascism. The Indian Students Group included future stalwarts of India and West Bengal such as Jyoti Basu, Bhupesh Gupta, Snehansu Kanta Acharya (former Attorney General of West Bengal), Feroze Gandhi, V. K. Krishna Menon and many other famous figures of Indian politics.
Document 6: Gavrik Losey: Gavrik was born in New York, the son of film director Joseph Losey and fashion designer Elizabeth Hawes. He attended the Little Red SchoolHouse in Manhattan, Poughkeepsie Day School in Poughkeepsie, and high school in New Jersey. After graduating, he travelled with his blacklisted father to England where he attended University College London.
Document 7: Ivan Morris: Ivan Morris was born in London, of mixed American and Swedish parentage to Edita Morris and Ira Victor Morris (son of diplomat Ira Nelson Morris and grandson of meat-packer Nelson Morris). He studied at Gordonstoun, before graduating from Phillips Academy. He began his study of Japanese language and culture at Harvard University, where he received a BA. He received a doctorate at the School of Oriental and African Studies in London. He wrote widely on modern and ancient Japan and translated numerous classical and modern literary works. Ivan Morris was one of the first interpreters sent into Hiroshima after the explosion of the bomb.
Document 8: John Matshikiza: John Matshikiza was born in Johannesburg, South Africa, to Todd Matshikiza - renowned jazz pianist, composer and journalist - and Esme Matshikiza. Due to apartheid, the Matshikiza family went into exile in London in 1961. John was only seven at the time he boarded the ship for London. Later the family moved to Lusaka, Zambia, where John completed his schooling and took a degree in economics and politics. He returned to London to the Central School of Speech and Drama to train in drama. While in the United Kingdom, he worked for the Royal Shakespeare Company and Glasgow's Citizens Theatre company and also worked in television and film. He became active in the exiled African National Congress, joining Mayibuye, the Cultural Unit of the ANC (he can be heard performing on their album 'Spear of the Nation', a collection of poems and songs in Xhosa, Sotho, Zulu, and English). John also lived in the United States, Netherlands and various African countries including Senegal, where he was director of the department of culture of the Gorée Institute. While in exile John had two books published: "South Where Her Feet Cool on Ice" (1981) and "Prophets in the Black Sky" (1986).
Document 9: Carmen Cardinali Paoa: Chilean deputy Interior Minister Rodrigo Ubilla appointed Carmen Cardinali as Governor of Easter Island in early September 2010 to replace Edmunds. Cardinali's challenges included archeological preservation of the island's heritage and revamping the tourist industry. She served as a Governor until March 2014, being replaced by Marta Raquel Hotus Tuki, appointed by president Michelle Bachelet.
Document 10: Marie Atkins: Marie Atkins was mayor of the Kingston and Saint Andrew Corporation (KSAC) from 1989 to 2003. Atkins was the third female mayor for Kingston & St. Andrew, Jamaica, and is the longest-serving mayor to date for Kingston & St. Andrew. She is the first Jamaican to become the president of the World Conference of Mayors.
Document 11: Houston: The city of Houston has a strong mayoral form of municipal government. Houston is a home rule city and all municipal elections in the state of Texas are nonpartisan. The City's elected officials are the mayor, city controller and 16 members of the Houston City Council. The current mayor of Houston is Sylvester Turner, a Democrat elected on a nonpartisan ballot. Houston's mayor serves as the city's chief administrator, executive officer, and official representative, and is responsible for the general management of the city and for seeing that all laws and ordinances are enforced.
Document 12: Ivan Moffat: Ivan Moffat was born in Havana, Cuba, the son of the British actress and poet Iris Tree and her American husband, artist and photographer Curtis Moffat. He was the grandson of actor-manager Sir Herbert Beerbohm Tree. The family lived, among other places, in America and Australia, and moved to London when Moffat was 8 years old. There, Moffat attended Dartington Hall School, in Totnes, Devon, befriending Michael Young. Moffat then studied at the London School of Economics. As an undergraduate, he joined the Communist Party, which caused him later to be blacklisted for a time in Hollywood. Jessica Mitford once described Moffat as "spanning the gap between Left-wing politics and the deb dance scene".
Document 13: Andrés Manuel López Obrador: On 2 July  2000, he was elected Head of Government of the Federal District—a position akin to that of city mayor for the national capital district—with 38.3% of the vote.
Document 14: Miami: In recent years the city government, under Mayor Manny Diaz, has taken an ambitious stance in support of bicycling in Miami for both recreation and commuting. Every month, the city hosts "Bike Miami", where major streets in Downtown and Brickell are closed to automobiles, but left open for pedestrians and bicyclists. The event began in November 2008, and has doubled in popularity from 1,500 participants to about 3,000 in the October 2009 Bike Miami. This is the longest-running such event in the US. In October 2009, the city also approved an extensive 20-year plan for bike routes and paths around the city. The city has begun construction of bike routes as of late 2009, and ordinances requiring bike parking in all future construction in the city became mandatory as of October 2009.
Document 15: Cerro, Havana: Cerro is one of the 15 municipalities or boroughs ("municipios" in Spanish) in the city of Havana, Cuba. As of 2016 it is considered "one of Havana’s poorest municipalities."
ground_truth: Marta Hernández Romero
sub_queries: What city was Ivan Moffat born in? Answer: Havana
Who was in charge of Havana ? Answer: Marta Hernández Romero