In this task, you are given a set of context paragraph and some supporting facts to answer a question. Your task is to generate answer for given question based on set of context paragraphs and supporting facts.

Context_1 : Dronamraju Krishna Rao (born January 14, 1937) is an Indian-born geneticist and president of the Foundation for Genetic Research in Houston, Texas. He was born in Pithapuram, in the state of Andhra Pradesh, India. One focus of his work has been the research of J. B. S. Haldane. Context_2 : Sondekoppa Ramachandrasastri Ramaswamy is an Indian writer, journalist, biographer, social activist and environmentalist. He has authored more than 50 books and thousand articles both in Kannada and English. He is recipient of the "Karnataka State Sahitya Akademi Award" (1992) for year's best work in social science. In 2015, he was honoured by Hampi University, Karnataka with the 'Nadoja' award. An avid campaigner for environmental issues and people's rights, he has led numerous movements both at state and national level for conservation of vast tracts of rich flora and fauna from ill-planned Government policies. His years as a writer and chronicler brought him under the influence of doyens of literature and public life such as D. V. Gundappa, V. Sitaramayya, Rallapalli Ananta Krishna Sharma, Yadava Rao Joshi and P Kodanda Rao. His writings essentially mirror the literary, cultural, nationalist and developmental problems that are contemporaneous to the present day scenario. S. R. Ramaswamy is currently the honorary Editor-in-Chief of Kannada monthly "Utthana" and "Rashrothana Sahitya" at Bangalore. Context_3 : Krishna Rao Voomaji Rao Ghorpade, better known as K. V. Ghorpade (March 17, 1919 December 23, 1997) was an Indian pathologist. Context_4 : (19 October 1969 6 October 2011) was a British-born scientist, who played a major role in the VR Centre for the Built Environment and the Space group at the University College London. His contribution had a great impact on the development of space syntax theory. This goes in parallel to his research into introducing a dynamic agent model that derives aggregate spatial analysis from the visual affordances of the built environment. Based on the principles of Turner's theory on Embodied space, his agent model proves to correlate well with natural movement behavior in architectural and urban environments. Context_5 : Stephen Kevin Burley is a British-born scientist, naturalized in both Canada and the United States, specializing in oncology and structural biology. He is a Distinguished Professor in the Department of Chemistry and Chemical Biology at Rutgers University. Burley directs the RCSB Protein Data Bank (a member of the Worldwide Protein Data Bank) and the Center for Integrative Proteomics Research Context_6 : Malladi Krishna Rao (born 6 June 1964) is a social worker and a politician of All India Congress. He is the Present MLA representing Yanam constituency and was Minister for Revenue includes Mines, Excise, Tourism, Civil Aviation, Sports & Fisheries during the year (2006-2011) for the Govt. of Puducherry. He has continuously won twice as an Independent candidate and twice as an Indian National Congress candidate in MLA elections and got the highest majority in Yanam for the first time in Yanam History. He is the first Yanam citizen from Yanam to become the minister in Government of Puducherry in 2007. Since 1996 till date, none of his opponents in general election got deposits in Yanam. Context_7 : John Burdon Sanderson Haldane ( ; 5 November 1892 1 December 1964) was a British-born scientist known for his work in the study of physiology, genetics, evolutionary biology, and in mathematics, where he made innovative contributions to the fields of statistics and biostatistics. He was the son of the equally famous John Scott Haldane and was a professed socialist, Marxist, atheist, and humanist whose political dissent led him to leave England in 1956 and live in India, becoming a naturalised Indian citizen in 1961. Context_8 : Calyampudi Radhakrishna Rao, FRS known as C R Rao (born 10 September 1920) is an Indian-born, naturalised American, mathematician and statistician. He is currently professor emeritus at Penn State University and Research Professor at the University at Buffalo. Rao has been honoured by numerous colloquia, honorary degrees, and festschrifts and was awarded the US National Medal of Science in 2002. The American Statistical Association has described him as "a living legend whose work has influenced not just statistics, but has had far reaching implications for fields as varied as economics, genetics, anthropology, geology, national planning, demography, biometry, and medicine." "The Times of India" listed Rao as one of the top 10 Indian scientists of all time. Rao is also a Senior Policy and Statistics advisor for the Indian Heart Association non-profit focused on raising South Asian cardiovascular disease awareness. Context_9 : Rama Rao Jr.'s first leading role came opposite Raveena Rajput in "Ninnu Choodalani" (2001), a romantic drama directed by V. R. Prathap, for which Rao was heavily criticized, mainly for his looks and acting ability. Later that same year, he had similar roles in two coming-of-age romantic dramas, wherein he portrayed college-going students: "Student No. 1" and "Subbu", the former being his major break into Tollywood. 2002 marked a turning point in his career, with two low-budget films, "Aadi" and "Allari Ramudu", becoming box-office hits. The former, an action drama, received highly positive reviews, with critics marking the improvement in his performance, while the latter, a melodrama, received mixed reviews, but did well at the box office. "Aadi" also did well financially, becoming the third highest-grossing film of 2002. He acted in two films in 2003, "Naaga", and "Simhadri". While the former was a forgettable film, the latter became a huge blockbuster. The success of "Simhadri" not only cemented his position in Tollywood, but also led to him selecting scripts with similar roles. He followed this success by portraying leading roles in a series of critical and commercial failures, including "Andhrawala" (2004), "Samba" (2004), "Naa Alludu" (2005), "Narasimhudu" (2005), and "Ashok" (2006), leading critics to believe that his career was over. However, in 2006, his career prospects improved when he played the role of Ramakrishna, an unemployed youngster avenging his sister's death, in director Krishna Vamsi's drama thriller "Rakhi". The film received highly positive reviews from critics, with many terming it as his finest performance. Subsequently, it was declared a hit at the box office. Context_10 : Laura Charlotte Hewitson is a British-born primate researcher noted for her work in the fields of reproductive biology and behavior. She is an Affiliate Scientist at the Washington National Primate Research Center (WaNPRC) and Adjunct Associate Professor of Psychiatry at the University of Texas Southwestern Medical Center. Additionally, she is Research Director of The Johnson Center for Child Health and Development in Austin, TX. Hewitson was a staff scientist at Oregon Health Sciences University from 1997-2001. From 2002 to 2010 she was an Associate Professor of Obstetrics, Gynecology and Reproductive Sciences at the University of Pittsburgh School of Medicine and member of Magee-Women's Research Institute and Foundation (MWRI&F) in Pittsburgh, PA. fact_1 : One focus of his work has been the research of J. B. S. Haldane. fact_2 : John Burdon Sanderson Haldane ( ; 5 November 1892 1 December 1964) was a British-born scientist known for his work in the study of physiology, genetics, evolutionary biology, and in mathematics, where he made innovative contributions to the fields of statistics and biostatistics. Question: Dronamraju Krishna Rao focused his work on the research of this british-born scientist who passed on 1 december what year?
1964