question: Who is Tsugphud Namgyal's paternal grandfather?
context: [["Prithvipati Shah", ["Prithvipati Shah( ?\u20131716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.", "He was the grandfather of Nara Bhupal Shah."]], ["Kaya Alp", ["Kaya Alp was, according to Ottoman tradition, the son of K\u0131z\u0131l Bu\u011fa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertu\u011frul, and the great grandfather of the Ottoman Empire founder, Osman I."]], ["Fujiwara no Nagara", [", also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.", "He was the grandfather of Emperor Y\u014dzei."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["Tsugphud Namgyal", ["Tsugphud Namgyal", "(Sikkimese: ; Wylie: \"gtsug phud rnam rgyal\")", "(1785\u20131863) was king of Sikkim from 1793 to 1863.", "He gained independence from Nepal in 1815 and ruled under a British protectorate from 1861.", "Under his father Tenzing Namgyal, most of Sikkim was appropriated by Nepal.", "Tshudpud Namgyal returned to Sikkim in 1793 to reclaim the throne.", "Because the capital of Rabdentse was too close to the Nepalese border, he shifted the capital to Tumlong.", "His mother was \"Gyalyum\" Anyo, a daughter of Chandzod Karwang.", "Sikkim allied itself with the British in India, who also considered Nepal an enemy.", "Nepal overran most of the region, sparking the Gurkha War in 1814 with the British East India Company.", "The Sugauli Treaty and Treaty of Titalia returned the annexed territory to Sikkim in 1817.", "In 1835, Tsugphud Namgyal ceded Darjeeling to the East India Company for an annual fee, but this relationship was broken off after he seized botanist Joseph Hooker and Darjeeling Superintendent Archibald Campbell during their expedition to Sikkim.", "This led to two British military attacks in 1850 and 1861, resulting in the annexation of Sikkim by 1861.", "Under the Treaty of Tumlong signed by his successor Sidkeong Namgyal in the same year, Tshudpud was granted the title of Maharaja of Sikkim by the British, and he abdicated the following year.", "At his death in 1863, aged 78, he had ruled Sikkim for 69 years, making him the longest-reigning Chogyal in history as well as the oldest ever Chogyal of Sikkim."]], ["Henry Bryant (naturalist)", ["Henry Bryant( May 12, 1820 \u2013 February 2, 1867) was an American physician and naturalist.", "He was the grandfather of Henry Bryant Bigelow."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]], ["Tenzing Namgyal", ["Tenzing Namgyal", "(Sikkimese: ; Wylie: \"bstan 'dzin rnam rgyal\")", "was the sixth Chogyal (king) of Sikkim.", "He succeeded Phuntsog Namgyal II in 1780 and was succeeded himself by Tsugphud Namgyal in 1793.", "During his reign Chogyal fled to Tibet, and later died there in exile."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Guillaume Wittouck", ["Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.", "He was the Grandfather of industrialist Paul Wittouck."]]]
supporting_facts: [["Tsugphud Namgyal", 4], ["Tenzing Namgyal", 3]]
evidences: [["Tshudpud Namgyal", "father", "Tenzing Namgyal"], ["Tenzing Namgyal", "father", "Phuntsog Namgyal II"]]
answer: Phuntsog Namgyal II