Question: Ghassan Shakaa was appointed to the mayoral position by which political leader?

full_context: Document 1: Muammar Gaddafi: Muammar Mohammed Abu Minyar Gaddafi ( ;    ;  1942 20 October 2011), commonly known as Colonel Gaddafi, was a Libyan revolutionary, politician, and political theorist. He governed Libya as Revolutionary Chairman of the Libyan Arab Republic from 1969 to 1977, then as the "Brotherly Leader" of the Great Socialist People's Libyan Arab Jamahiriya from 1977 to 2011. He was initially ideologically committed to Arab nationalism and Arab socialism, but later came to rule under his own Third International Theory.
Document 2: Hisham Ghassib: Hisham B. Ghassib is a Jordanian theoretical physicist and Marxist intellectual. He is professor of physics at the Princess Sumaya University for Technology (PSUT), where he was formerly Dean.
Document 3: Fares Mana'a: Fares Mohammed Mana'a (born February 8, 1965) is a top Yemeni arms-dealer, businessman, rebel commander and politician. He is said to be Yemen's most famous arms-dealer. Mana'a was born on February 8, 1965 in the northern city of Sa'dah and was an ally of Yemeni President Ali Abdullah Saleh and member of his ruling GPC party and served as head of his presidential committee and as head of a local council tasked with mediating a peace-deal between the Yemeni government and Houthis during the Shia insurgency in Yemen. His brother was the governor of Saada Governorate at the time.
Document 4: Ali Nasir Muhammad: Ali Nasir Muhammad Husani (Arabic: علي ناصر محمد الحسني‎ ‎ ) (born 31 December 1939) was the leader of South Yemen as General Secretary of the Yemeni Socialist Party between 1980 and 1986. He also was twice president of South Yemen and once the Prime Minister. He served as the Prime Minister from 2 August 1971 until 14 February 1985 and as Chairman of the Presidential Council from 26 June 1978 - 27 December 1978. In April 1980, South Yemeni president Abdul Fattah Ismail resigned and moved to Moscow. His successor was Ali Nasir Muhammad who took a less interventionist stance toward both North Yemen and neighbouring Oman. On January 13, 1986, a violent struggle began in Aden between Ali Nasir's supporters and supporters of the returned Ismail. (See South Yemen Civil War) Fighting lasted for more than a month and resulted in thousands of casualties, Ali Nasir's ouster, and Ismail's death. Muhammad's term had lasted from 21 April 1980 to 24 January 1986. Some 60,000 people, including the deposed Ali Nasir, fled to North Yemen. He was succeeded by Haidar Abu Bakr al-Attas.
Document 5: Zekra Alwach: Thikra or Zekra Muhammed Jaber Alwash Al-Abayachi (Arabic: ذكرى محمد جابر علوش العبايجي‎ ‎ ) is the current mayor of Baghdad since February 2015, replacing Naim Aboub al-Kaabi. Alwach has a Bachelor in engineering from Baghdad University of Technology, a Master in construction project management from University of Baghdad and a PhD in construction project management from Baghdad University of Technology. She started her career in 1993 as an engineer in construction projects and was responsible for administrative responsibilities until she was appointed director general of the Ministry of Higher Education, and is regarded as highly skilled technocrat. Alwach reports directly to the Prime Minister, Haider al-Abadi. In her only interview with an English-language publication Alwach talked about the challenges of governing a war-torn city, the weight of responsibility she feels to succeed and the struggle for women’s rights in Iraq. She was married to Major General Ali Araji.
Document 6: Sa'id al-Shawwa: Hajj Sa'id al-Shawwa (Arabic: الحـاج سعيد الشوا‎ ‎ ) (1868–October 1930) was a Palestinian Arab politician and the first mayor of Gaza, serving from 1906 to 1917. He was also one of the most influential members of the Supreme Muslim Council from 1921 until his death. He was an opponent of British mandatory rule in Palestine, supporting the Ottomans during World War I and later the nationalist Grand Mufti of Jerusalem, Amin al-Husayni.
Document 7: Gamal Abdel Nasser: Gamal Abdel Nasser Hussein (Arabic: جمال عبد الناصر حسين‎ ‎ , ] ; 15 January 1918 – 28 September 1970) was the second President of Egypt, serving from 1956 until his death. Nasser led the 1952 overthrow of the monarchy and introduced far-reaching land reforms the following year. Following a 1954 attempt on his life by a Muslim Brotherhood member, he cracked down on the organization, put President Muhammad Naguib under house arrest, and assumed executive office, officially becoming president in June 1956.
Document 8: Issam Sartawi: Dr Issam Sartawi (Arabic: عصام السرطاوي; 1935 – April 10, 1983) was a senior member of the Palestine Liberation Organization (PLO). He was assassinated on April 10, 1983.
Document 9: Ghaleb Awwali: Ghaleb Awwali was a senior Amal Movement and later Lebanese Islamic Jihad official who was assassinated in a car bombing in Beirut, Lebanon in a Hezbollah controlled area, on 19 July 2004. Hezbollah blamed Israel and the Jund Ash Sham organization but offered no evidence, while others blamed Hezbollah itself, as Awwali had been active independently, and had been involved with Sunni Palestinian militant organizations. Ghaleb Awwali has been called a martyr of Lebanon and a martyr of Palestine. Hezbollah officials have claimed that the Zionist movement is behind the attacks and have claimed that Jund Ash Sham is linked to Israel, but have offered no evidence.
Document 10: Ras J. Baraka: Ras J. Baraka (born April 9, 1970) is an American educator, author, and politician who is the 40th and current Mayor of Newark, New Jersey. He was previously a member of the Municipal Council of Newark and the principal of the city's Central High School until he took an indefinite leave of absence to run for the 2014 Newark mayoral election, which he won on May 13, 2014. Baraka was sworn in as the city's 40th mayor at ceremonies at the New Jersey Performing Arts Center on July 1, 2014 for a four-year term.
Document 11: Ghassan Shakaa: Ghassan Shakaa (Arabic: غسان الشكعة‎ ‎ , Ghassān Shak’ā ) (born 1943) is the mayor of Nablus since October 2012, one of the largest cities in the West Bank. Another former Nablus mayor, Bassam Shaka, is his uncle. Shakaa was appointed to his position by Yasser Arafat. His brother was assassinated by a still unknown group. Shakaa published an open letter in which he called for the Palestinian National Authority to restore order to his politically divided city.
Document 12: Yasser Arafat: Mohammed Yasser Abdel Rahman Abdel Raouf Arafat al-Qudwa ( ; Arabic: محمد ياسر عبد الرحمن عبد الرؤوف عرفات‎ ‎ ‎ ; 24 August 1929 – 11 November 2004), popularly known as Yasser Arafat (Arabic: ياسر عرفات‎ ‎  , "Yāsir `Arafāt ") or by his kunya Abu Ammar (Arabic: أبو عمار‎ ‎  , "'Abū `Ammār "), was a Palestinian political leader. He was Chairman of the Palestine Liberation Organization (PLO) from 1969 to 2004 and President of the Palestinian National Authority (PNA) from 1994 to 2004. Ideologically an Arab nationalist, he was a founding member of the Fatah political party, which he led from 1959 until 2004.
Document 13: Rashad Shawa Cultural Center: The Rashad Shawa Cultural Center is a cultural center that was built in 1985, in Rimal, Gaza, Palestine. The place was named after Rashad al-Shawa, the city's Palestinian mayor who served in office for 11 years. The building was completed 1988.
Document 14: Rashad al-Shawwa: Rashad al-Shawwa (Arabic: رشاد الشوا‎ ‎ ) (1909 - 28 September 1988) was the Palestinian mayor of Gaza for eleven years from 1971 to 1982. Before becoming mayor he was an outgoing local activist in the city. He was known by Israelis and Palestinians as the pro-Jordanian "father figure" of the Gaza Strip. He is the father of artist Laila Shawwa.
Document 15: Mansur al-Atrash: Mansur al-Atrash (Arabic: منصور الأطرش‎ ‎ ; 3 February 1925 – 14 November 2006) was a Syrian politician and journalist. Together with fellow university students, Atrash became a founding member of the Ba'ath Party and its Syrian regional branch in 1947. During the presidency of Adib Shishakli (1951–54), he became an anti-government activist and was imprisoned twice, only to be released in an unsuccessful attempt by Shishakli to gain the support of Atrash's father, Sultan. In the year Shishakli was overthrown, Atrash was elected to parliament and turned down an offer to serve in Said al-Ghazzi's government. During the period of the United Arab Republic (1958–61), Atrash became a strong supporter of Egyptian president and pan-Arab leader Gamal Abdel Nasser. He opposed Syria's secession from the UAR and turned down offers to serve in successive separatist governments in protest.
ground_truth: Mohammed Yasser Abdel Rahman Abdel Raouf Arafat al-Qudwa