Question: When was the  Prime Minister of India after which V. K. Krishna Menon was regarded as the second most powerful man in India born?  

full_context: Document 1: Gangadhar Nehru: Gangadhar Nehru (1827 – February 1861) was an Indian police officer, who served as the last kotwal of Delhi (Chief of police) in the court of Bahadur Shah II, before the position was abolished following the Indian Rebellion of 1857. He was the father of freedom fighter Motilal Nehru and grandfather of India's first Prime Minister, Jawaharlal Nehru, and thus part of the Nehru–Gandhi family.
Document 2: Rameshwari Nehru: Rameshwari Nehru, born Rameshwari Raina (1886–1966), was a very prominent social worker of India. She worked for the upliftment of the poorer classes as well as for women. In 1902, she was married to Brij Lal Nehru, nephew of Motilal Nehru and cousin of the first prime minister of independent India, Jawaharlal Nehru. Her son Braj Kumar Nehru was an Indian civil servant who served as governor of several states.
Document 3: Motilal Nehru: Pt. Motilal Nehru (6 May 1861 – 6 February 1931) was an Indian lawyer, an activist of the Indian National Movement and an important leader of the Indian National Congress, who also served as the Congress President twice, 1919–1920 and 1928–1929. He was the founder patriarch of the Nehru-Gandhi family.
Document 4: Nehru–Gandhi family: The Nehru–Indira Gandhi family is a prominent Indian political dynasty, which primarily consisted of Jawaharlal Nehru, Indira Gandhi and her descendants. Their political involvement has traditionally revolved around the Indian National Congress. Members of the family have traditionally led the Congress party and the Republic of India since independence.
Document 5: Abul Kalam Azad: Maulana Sayyid Abul Kalam Ghulam Muhiyuddin Ahmed Azad (   ; 11 November 1888 – 22 February 1958) was an Indian scholar and the senior Muslim leader of the Indian National Congress during the Indian independence movement. Following India's independence, he became the first Minister of Education in the Indian government. He is commonly remembered as Maulana Azad; the word Maulana is an honorific meaning 'Our Master', and he had adopted "Azad" ("Free") as his pen name. His contribution to establishing the education foundation in India is recognised by celebrating his birthday as "National Education Day" across India.
Document 6: Laxmi Mall Singhvi: L. M. Singhvi (9 November 1931 – 6 October 2007) was an Indian jurist, parliamentarian, scholar, writer and diplomat. He was, after V. K. Krishna Menon, the second-longest-serving High Commissioner for India in the United Kingdom (1991–97) He was conferred Padma Bhushan in 1998.
Document 7: Gopal Krishna Pillai: Gopal Krishna Pillai or G. K. Pillai (born 30th Nov, 1949) is an Indian Administrative Service (I.A.S) officer and the former Home Secretary of India. He studied at Bishop Cotton Boys' School, Bangalore and St. Joseph’s College, Bangalore, and later obtained an M.Sc from IIT, Madras. He belongs to the Kerala cadre of the 1972 batch of I.A.S. Pillai held diverse positions in the state government of Kerala such as:
Document 8: Ratan Kumar Nehru: Ratan Kumar Nehru or R.K. Nehru, (10 October 1902 – 2 April 1981) was an Indian civil servant and diplomat. He was a cousin (once removed) of Jawaharlal Nehru, the son of Mohan Lal Nehru (who was the son of Nand lal Nehru, Motilal Nehru's brother). He was the secretary-general of the Indian Ministry of foreign affairs and also served as ambassador to several countries in the 1950s and 1960s. During 1955-58, he was the Indian ambassador to China and to the United Arab Republic during 1958-60.
Document 9: V. K. Krishna Menon: Vengalil Krishnan Krishna Menon (3 May 1896 – 6 October 1974) was an Indian nationalist, diplomat and politician, described by some as the second most powerful man in India, after his ally, 1st Prime Minister of India Jawaharlal Nehru.
Document 10: Muhammad Ali Jinnah: Muhammad Ali Jinnah (born Mahomedali Jinnahbhai; 25 December 1876 11 September 1948) was a lawyer, politician, and the founder of Pakistan. Jinnah served as leader of the All-India Muslim League from 1913 until Pakistan's independence on 14 August 1947, and then as Pakistan's first Governor-General until his death. He is revered in Pakistan as "Quaid-i-Azam" (Urdu: ‎ ; Great Leader) and "Baba-i-Qaum" (Urdu: ‎ ; Father of the Nation). His birthday is observed as a national holiday in Pakistan.
Document 11: Malladi Krishna Rao: 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.
Document 12: Mahatma Gandhi: Mahātmā Mohandas Karamchand Gandhi ( ; ] ; 2 October 1869 – 30 January 1948) was the leader of the Indian independence movement against British rule. Employing nonviolent civil disobedience, Gandhi led India to independence and inspired movements for civil rights and freedom across the world. The honorific Mahātmā (Sanskrit: "high-souled", "venerable")—applied to him first in 1914 in South Africa—is now used worldwide. In India, he is also called Bapu ji (Gujarati: endearment for "father", "papa") and Gandhi ji. He is unofficially called the "Father of the Nation"
Document 13: Jawaharlal Nehru: Jawaharlal Nehru ( ; ; 14 November 1889 – 27 May 1964) was the first Prime Minister of India and a central figure in Indian politics before and after independence. He emerged as the paramount leader of the Indian independence movement under the tutelage of Mahatma Gandhi and ruled India from its establishment as an independent nation in 1947 until his death in 1964. He is considered to be the architect of the modern Indian nation-state: a sovereign, socialist, secular, and democratic republic. He was also known as Pandit Nehru due to his roots with the Kashmiri Pandit community while many Indian children knew him as "Chacha Nehru" (Hindi, lit., "Uncle Nehru").
Document 14: Cheril Krishna Menon: Cheril Krishna Menon, popularly known as C. K. Menon, is an Indian entrepreneur and philanthropist. He is the chairman and chief executive officer of Behzad Corporation, headquartered in Doha, Qatar, which has presence in many other countries. A recipient of the 2006 Pravasi Bharatiya Samman, Menon was honored again by the Government of India, in 2009, with the fourth highest Indian civilian award of Padma Shri.
Document 15: Nehruism: Nehruism is the name given to the political ideology of Jawaharlal Nehru, India's first prime minister. It was a liberal and idealistic type of fabianist socialism. It basically ended as a de facto political system after Nehru's death, since even his descendants in politics did not follow this model. The authoritarian (Indira Gandhi) or liberal (Rajiv Gandhi and Sonia Gandhi) had various deviations from Nehru's ideology.
ground_truth: 14 November 1889