Question: What is the name of the chief justice of the country where Tarkwa mine is located?

full_context: Document 1: Chief Justice of Nigeria: Chief Justice Term Sir Edwin Speed 1914 -- 1918 Sir Ralph Combe 1918 -- 1929 Donald Kingdon 1929 -- 1946 Sir John Verity 1946 -- 1954 Sir Stafford Sutton 1955 -- 1958 Adetokunbo Ademola 1958 -- 1972 Taslim Olawale Elias 1972 -- 1975 Darnley Arthur Alexander 1975 -- 1979 Atanda Fatai Williams 1979 -- 1983 George Sodeinde Sowemimo 1983 -- 1985 Ayo Gabriel Irikefe 1985 -- 1987 Mohammed Bello 1987 -- 1995 Muhammad Lawal Uwais 1995 -- 2006 Salihu Moddibo Alfa Belgore 2006 -- 2007 Idris Legbo Kutigi 2007 -- 2009 Aloysius Iyorgyer Katsina - Alu 2009 -- 2011 Dahiru Musdapher 2011 -- 2012 Aloma Mariam Mukhtar 2012 -- 2014 Mahmud Mohammed 2014 -- 2016 Walter Samuel Nkanu Onnoghen 2017 --
Document 2: Ghana Bar Association: The British parliament established the Supreme Court of Judicature for the Gold Coast Colony in 1876, with a Chief Justice and no more than four Puisne Justices. John Mensah Sarbah was the first native of Ghana to be called to the bar by Lincoln's Inn in 1887. The legal system was based on that of England, in which solicitors provide legal advice and prepare legal documents while barristers act as advocates in court. However, this division was not observed in practice in Ghana, and in 1960 an act abolished the distinction. Until the Ghana School of Law was established in 1958, all lawyers were trained abroad, almost always at the Inns of Court in England. As of 2011 there are about 2,500 practicing lawyers, although not all have registered as members of the Bar Association.
Document 3: Galore Creek mine: The proposed Galore Creek mine is one of the largest undeveloped gold deposits in Canada and in the world. The deposit is located in the north-west of the country in British Columbia. The mine has estimated reserves of 12 billion pounds of copper, 10.7 million oz of gold and 183.1 million oz of silver.
Document 4: Government of the Philippines: The judicial power is vested in the Supreme Court of the Philippines and lower courts established by law. The Supreme Court, which has a Chief Justice as its head and 14 Associate Justices, occupies the highest tier of the judiciary. The justices serve until the age of 70. The justices are appointed by the president on the recommendation of the Judicial and Bar Council of the Philippines. The sitting Chief Justice is Maria Lourdes Sereno, the 24th to serve in that position...
Document 5: Omai mine: The Omai mine is one of the largest gold mines in Guyana. The mine is located in the north-west of the country in Cuyuni-Mazaruni. The mine has estimated reserves of 3.7 million oz of gold.
Document 6: Tarkwa mine: The Tarkwa mine is one of the largest gold mines in the Ghana and in the world. The mine is located in the south-west of the country in the Western Region. The mine has estimated reserves of 15.1 million oz of gold.
Document 7: Kencana mine: The Kencana mine is one of the largest gold mines in Indonesia and in the world. The mine is located in the east of the country in North Maluku. The mine has estimated reserves of 4.63 million oz of gold and 6 million oz of silver.
Document 8: Attorney General of Ghana: The current Attorney General is Miss Gloria Akuffo. She was appointed by President Nana Addo Danquah Akufo - Addo in 2017.
Document 9: Chief Justice of Ghana: The current Chief Justice is Sophia Akuffo. She succeeded Georgina Wood who was Ghana's first female Chief Justice. Akuffo was sworn in as Chief Justice by President Akufo - Addo on 19 June 2017.
Document 10: Toroparu mine: The Toroparu mine is one of the largest gold mines in the Guyana and in the world. The mine is located in the north-west of the country in Cuyuni-Mazaruni. The mine has estimated reserves of 6 million oz of gold.
Document 11: Chief Justice of Pakistan: The first Chief Justice was Sir Abdul Rashid. The current Chief Justice is Mian Saqib Nisar; incumbent since 31 December 2016.
Document 12: Varvara mine: The Varvara mine is one of the largest gold mines in Kazakhstan and in the world. The mine is located in Kostanay Region. The mine has estimated reserves of 5.2 million oz of gold.
Document 13: President of Ghana: The President of the Republic of Ghana is the elected head of state and head of government of Ghana, as well as Commander - in - Chief of the Ghana Armed Forces. The current President of Ghana is Nana Akufo - Addo, who won the 2016 presidential election against the incumbent, John Dramani Mahama, by a margin of 9.45%. Nana Akufo - Addo was sworn into office on 7 January 2017.
Document 14: Chief Justice of Pakistan: The first Chief Justice was Sir Abdul Rashid. As of May 2018, the Chief Justice was Mian Saqib Nisar; incumbent since 31 December 2016.
Document 15: Kyzyl mine: The Kyzyl mine is one of the largest gold mines in the Kazakhstan and in the world. The mine is located in the east of the country in East Kazakhstan Province. The mine has estimated reserves of 10.37 million oz of gold.
ground_truth: Sophia Akuffo
sub_queries: Tarkwa mine >> country Answer: Ghana
what is the name of the chief justice of Ghana Answer: Sophia Akuffo