Question: Who is the first prime minister of the country where Bernard Tan was in?

full_context: Document 1: Prime Minister of South Korea: Prime Minister of the Republic of Korea 대한민국국무총리 Prime ministerial standard Prime ministerial emblem Incumbent Lee Nak - yeon since 31 May 2017 Style Prime Minister (총리님) (informal) Member of State Council National Security Council Appointer President of South Korea (Subject to the National Assembly's approval) Term length No fixed term Constituting instrument Constitution of South Korea Inaugural holder Lee Beom - seok Formation July 31, 1948; 69 years ago (1948 - 07 - 31) Website (in English) pmo.go.kr/ (in Korean) pmo.go.kr/
Document 2: Prime Minister of Singapore: Prime Minister of the Republic of Singapore (show) Perdana Menteri Republik Singapura (Malay) 新加坡共和国总理 (Chinese) சிங்கப்பூர் குடியரசின் பிரதமர் (Tamil) Prime Minister's Crest Incumbent Lee Hsien Loong, MP since 12 August 2004 Style The Honourable Residence Sri Temasek Appointer President of the Republic of Singapore Term length 5 years or earlier, renewable. The Parliament of Singapore must be dissolved every 5 years or earlier by the Prime Minister. The leader of the majority party in the parliament will become the Prime Minister. Inaugural holder Lee Kuan Yew Formation 3 June 1959 Salary S $2.2 million annually Website www.pmo.gov.sg
Document 3: Bernard Tan: Bernard Tan Tiong Gie (born 1943 in Singapore) was educated at the Anglo-Chinese School, Singapore, the University of Singapore (Bachelor of Science with Honours in Physics, 1965) and Oxford University (Doctor of Philosophy in Engineering Science, 1968). He is a Chartered Engineer and Member of the Institution of Electrical Engineers (UK), Fellow of the Institute of Physics (U.K), Fellow of the Institute of Physics, Singapore, and Fellow of Trinity College of Music, London.
Document 4: Anthony Lun: Anthony Lun is a graduate of La Salle College, Hong Kong, Santa Clara University (Bachelor of Arts) and University of Michigan (Masters of Music).
Document 5: The Istana: The Istana is the official residence and office of the President of Singapore. Meaning "palace" in Malay, it is where the President receives and entertains state guests. The Istana is also the working office of the Prime Minister of Singapore.
Document 6: Margaret Leng Tan: She was born in Singapore on 12 December 1945, the daughter of former Straits Times Press chairman Tan Chye Cheng, and started taking music lessons at the age of six. In 1961 the young Tan took first place in the Singapore-Malaysia annual piano competition, and won a scholarship to study at The Juilliard School at age 16 in the following year. In 1971 she became the first woman to earn a Doctorate in Musical Arts at Juilliard, and became the diva of the prepared piano, inserting nuts and bolts into the instrument and playing it inside out to rave reviews.
Document 7: Prime Minister of Australia: Prime Minister of Australia Commonwealth Coat of Arms Incumbent Malcolm Turnbull since 15 September 2015 Government of Australia Department of the Prime Minister and Cabinet Style The Honourable (formal) Prime Minister (spoken) His / Her Excellency (in international correspondence) Member of Cabinet National Security Committee Federal Executive Council Reports to Parliament, Governor - General Residence The Lodge Kirribilli House Seat Canberra Appointer Governor - General of Australia by convention, based on appointee's ability to command confidence in the House of Representatives Term length At the Governor - General's pleasure contingent on the Prime Minister's ability to command confidence in the lower house of Parliament Inaugural holder Edmund Barton Formation 1 January 1901 Deputy Michael McCormack Salary $527,852 (AUD) Website pm.gov.au
Document 8: Prime Minister of India: Prime Minister of the Government of India State Emblem of India Flag of India Incumbent Narendra Modi since 26 May 2014 (2014 - 05 - 26) Prime Minister's Office Style The Honourable (formal) His Excellency (in diplomatic correspondence) Status Head of government Abbreviation PM Member of Cabinet, parliament Residence 7, Lok Kalyan Marg, New Delhi Seat Prime Minister's Office, South Block, New Delhi Appointer President of India by convention, based on appointee's ability to command confidence in the Lok Sabha Term length At the pleasure of the president Lok Sabha term is 5 years unless dissolved sooner No term limits specified Inaugural holder Jawaharlal Nehru (1947 - 1964) Formation 15 August 1947; 70 years ago (1947 - 08 - 15) Deputy Deputy Prime Minister of India (if any) Salary ₹20 lakh (US $31,000) (annual, including ₹960,000 (US $15,000) MP's salary) Website pmindia.gov.in
Document 9: Sammu Raghu De Silva Chandrakeerthy: Prof. Sammu Raghu De Silva Chandrakeerthy was born in 1945 and had his schooling at Richmond College, Galle. He entered the Faculty of Engineering of the University of Ceylon at Peradeniya in 1963 and graduated in 1967 with an Honours Degree in Civil Engineering. He obtained the PhD degree specializing in Structural Engineering in 1973, from the University of Sheffield, England.
Document 10: Goh Chok Tong: Goh Chok Tong (born 20 May 1941; Chinese: 吴作栋; Pe̍h-ōe-jī: Gô͘ Chok-tòng) is a Singaporean politician. A member of the People's Action Party (PAP), he became Singapore's second Prime Minister on 28 November 1990, succeeding Lee Kuan Yew, and served in the role until 12 August 2004, when he stepped down and was succeeded by Lee Hsien Loong. He subsequently served as Senior Minister until May 2011, and as Chairman of the Monetary Authority of Singapore (MAS). He continues to serve as a Member of Parliament (MP) representing the Marine Parade Group Representation Constituency and holds the honorary title of "Emeritus Senior Minister". Recently, in November 2018, he released his autobiography, Tall Order: The Goh Chok Tong Story which would be the first volume of a two-part biography.
Document 11: Leader of the Opposition (Singapore): The Leader of the Opposition of Singapore is usually the leader of the second largest political party represented in the Parliament of Singapore. During the 1955 Legislative Assembly election, the late Lee Kuan Yew was the "de facto" Leader of the Opposition, as the People's Action Party was then the second largest political party represented in the Legislative Assembly.
Document 12: Lau Teng Chuan: Lau Teng Chuan BPE, MSc (13 April 1929 – 8 May 2012) was a Singaporean sportsman, coach, teacher, and sports administrator, and considered to be the 'father of physical education' in Singapore. Lau was instrumental in the development of sports in Singapore.
Document 13: Tan Chung: Tan Chung taught at Jawaharlal Nehru University (JNU) and the University of Delhi for many years. His father, Tan Yunshan (1898-1983), was the Founding Director of the Department of Chinese Language and Culture "Cheena-Bhavana" at Visva-Bharati University, Santiniketan and a key figure driving Nationalist China's interactions with the Indian freedom movement during the 1930s and 1940s. After Tan Chung's retirement from JNU in 1994, he worked as a Research Professor at Indira Gandhi National Centre for the Arts, New Delhi and currently lives in Chicago, United States. He has been Honorary Director of the ICS/Institute of Chinese Studies, New Delhi.
Document 14: Tan Suee Chieh: Tan Suee Chieh’s directorships include International Cooperative and Mutual Insurance Federation and Allnations Board. Tan Suee Chieh is also the Co-chairman of the Institute of Service Excellence@SMU, Vice Chairman of the Singapore Children’s Society Executive Committee, a member of the Board of Governors of the Asia Pacific Risk and Insurance Association, Advisory Board Member of the Centre for Strategic Leadership at National University of Singapore and Sim Kee Boon Institute for Financial Economics at Singapore Management University, and Trustee of the Singapore London School of Economics (LSE) Trust.
Document 15: Prime Minister of Canada: Prime Minister of Canada Logo of the Prime Minister of Canada Incumbent Justin Trudeau since November 4, 2015 Executive Branch of the Government of Canada Office of the Prime Minister Style The Right Honourable (formal) Prime Minister (informal) His Excellency (diplomatic) Abbreviation PM Member of Queen's Privy Council Cabinet Parliament Reports to Monarch Governor General Parliament Residence 24 Sussex Drive (under renovation) Harrington Lake (seasonal) Rideau Cottage (temporary) Seat 80 Wellington St, Ottawa, ON K1P 5K9 Appointer Governor General Term length At Her Majesty's pleasure Constituting instrument None (constitutional convention) Inaugural holder Sir John A. Macdonald Formation July 1, 1867 Deputy Deputy Prime Minister of Canada (vacant) Salary $347,400 CAD (2018) Website www.pm.gc.ca
ground_truth: Lee Kuan Yew
sub_queries: What country was Bernard Tan in? Answer: Singapore
who is the first prime minister of Singapore Answer: Lee Kuan Yew