Question: What sub-tribe of the Popalzai did the Pakistan Movement activist Shahzada Rehmatullah Khan Durrani belong to?

Context paragraphs:
Sadozai Qaumi Welfare Organization: The Sadozai Qaumi Welfare Organization Urdu سد و زئ قومی ویلفیئر آرگنائزیشن Balochistan known as SQWO is a non-profit Social welfare Volunteer Organization of the people of Sadozai sub branch of Durrani tribe in Quetta Balochistan Pakistan.  this Organization was founded by Shahzada Rehmatullah Khan Saddozai Durrani in 1935 after the 1935 Balochistan earthquake Quetta for the welfare of earthquake effective's specially people of Sadozai tribe.  This organization works for the social benefit of the Sadozai tribe specially in the field of education and health care.  after the death of Shahzada Rehmatullah Khan Durrani at present his son Sardar Ahmad Khan Sadozai is the Chairman of Sadozai Qaumi welfare Organization Balochistan.  while Wazirzada Dawood-Ur-Rehman is performing as President and Engineer Shahzada Naseebullah Khan Sadozai is performing as Secretary of the SQWO.

Shahzada Rehmatullah Khan Saddozai: Shahzada Rehmatullah Khan Durrani (Pashto: شہزادہ رحمت اللہ خان درانی‎ ) was a Pakistan Movement activist born on 10 October 1919 in the Sadozai dynasty of Durrani, the ethnic Pashtun Sadozai tribe, section of the Popalzai sub clan of Durrani Abdali Pashtun tribe in British India, Quetta.

Khalilur Rehman (governor): Khalilur Rehman (Urdu: خلیل الرحمن‎ ; born 1934) is a retired Commander in the Pakistan Navy who served as the 25th governor of the Khyber Pakhtunkhwa province of Pakistan.  He was the Deputy Chairman of the Senate of Pakistan representing the ruling Pakistan Muslim League (Q) before taking over as governor of the province.  During his tenure, Vice Chancellor Professor Said Khan Khalil made illegal appointments in Agricultural University Peshawar.  Chief Minister Akram Khan Durrani, unhappy with the appointment, the VC to review it.  The VC refused with the full support of Governor Rehman.  Akram Durrani requested the then Prime Minister that the governor may be relieved of his duties as he is not fit for the job, otherwise he will not support the Federal Government.  This message was conveyed to President Pervez Musharraf, who asked the governor to resign.  As a result, he resigned in May 2006.

Ra'ana Liaquat Ali Khan: Begum Ra'ana Liaqat Ali Khan (Urdu: ‎ , born Sheila Irene Pant; February 1905 – 13 June 1990), was one of the leading woman figures in the Pakistan Movement along with her husband Liaquat Ali Khan, and a career economist, and prominent stateswoman from the start of the cold war till the fall and the end of the cold war.  Ra'anna was one of the leading woman politicians and nationwide respected woman personalities who started her career in the 1940s and witnessed key major events in Pakistan.  She was one of the leading and pioneering woman figures in the Pakistan Movement and served as the executive member of Pakistan Movement committee working under Muhammad Ali Jinnah.  She also served as economic adviser to Jinnah's Pakistan Movement Committee and later became First Lady of Pakistan when her husband Liaqat Khan Ali became Pakistan's first prime minister.  As First Lady of Pakistan, she launched programs for woman's development in the newly founded country.  Later, she would start her career as a stateswoman that would last a decade.

Mohammad Anwar Khan Durrani: Mohammad Anwer Khan Durrani (26 December 1946–2008) was a Pakistani politician, lawyer and Senator and a very famous Khan of Popalzai sub clain of Durrani Pashtun tribe in Balochistan.

Etymology of Pakistan: The name "Pakistan" ( or ; Urdu: پاکستان‎  [paːkɪˈst̪aːn] ) means "Land of (the) Spiritually Pure" in both Urdu and Persian languages.  Many South-central Asian states and regions end with the element -"stan," such as "Afghanistan," "PAKISTAN," "Baluchistan," "Kurdistan," and "Turkistan."  This -"stan" is formed from the Iranian root *STA "to stand, stay," and means "place (where one stays), home, country".  Iranian peoples have been the principal inhabitants of the various geographical region of the Ancient Persian Empires now occupied by the states for over a thousand years.  The names are compounds of -"stan" and the name of the peoples living there.  Pakistan is a bit of an exception; its name was coined on the 28th January 1933 as "Pakstan " by Choudhary Rahmat Ali, a Pakistan Movement activist, who published it in his paper "Now or Never".  by using the suffix -"istan" from "Baluch"istan preceded by the initial letters of "P"unjab, "A"fghanistan, and "K"ashmir.  The name is actually an acronym that stands for the "thirty million Muslim brethren who lived in PAKSTAN—by which we mean the Five Northern units of India viz: Punjab, (Afghan Province), Kashmir, Sind, and Baluchistan".  The letter "i" was incorporated to ease pronunciation and forms the linguistically correct and meaningful name.  Most notably interestingly, a word almost identical in form, etymology, and meaning to the Iranian suffix -"stan" is found in Polish, which has a word "stan" meaning "state" (in the senses of both polity and condition).  It can be found in the example of a Polish name for the "United States of America," "Stany Zjednoczone Ameryki" (literally "States United of America").

Abdul Ghafoor Khan Durrani: Abdul Ghafoor Khan Durrani (Pashto: عبدالغفور خان درانی ‎ ) (born 1910, date of death is 20 February 2000) was born in Quetta Balochistan British India, into the Bamizai Popalzai tribe, a sub clan of Durrani (Abdali) Pashtun of Quetta.

Asif Durrani: Asif Ali Khan Durrani is the current Ambassador of Pakistan to the United Arab Emirates.  He presented his credentials as ambassador on 4 February 2014.  Durrani holds a master's degree from the University of Balochistan in Quetta, and a Masters in International Studies and Diplomacy from the School of Oriental and African Studies, University of London.  He joined the Foreign Service of Pakistan in 1986.  He served in various diplomatic postings in New Delhi, Tehran, New York, Kabul and London.

Watan Group: Watan Group (translates as "Nation Group") is a company based in Afghanistan that provides telecommunications, logistics and security services.  It is owned by the Popal brothers who are believed to be cousins of Afghan President, Hamid Karzai.  They are from the powerful Popalzai sub-tribe, the same group that the Founding Father of Afghanistan, Ahmad Shah Durrani, and all of Afghanistan's former leaders belonged to.  The Popalzais are traditionally the influential and elite group of Afghanistan, and are also a powerful group in neighboring Pakistan, particularly in Balochistan.  In addition, many Popalzai members are in the United States, United Kingdom, European Union, Australia and United Arab Emirates (UAE).

Sadozai (Pashtun tribe): The Sadozai are a sub-tribe of the Popalzai.  They are Pashtun and are traditionally considered to descend from Sado Khan, an important chief of the 17th-century who was called "lord of the Pashtuns".  His direct descendants established the Durrani Empire, leading to the tribe sometimes being called the Sadozai dynasty.

Supporting paragraphs: Shahzada Rehmatullah Khan Saddozai Sadozai (Pashtun tribe)
Answer: Sadozai