Question: Mullah Mohammad Rabbani Akhund, was one of the main leaders of the Taliban movement, he was second in power only to which supreme leader?

Context paragraphs:
Mohammad Ghous: Mullah Mohammad Ghous (born 1961?)  was among the leadership of the Taliban which ruled Afghanistan from 1996 to 2001.  He served as foreign minister of Afghanistan from September 1996, when the Taliban captured Kabul until June 1997, when he and some other Taliban leaders were kidnapped by opposition forces at Mazar-i-Sharif in the northern part of the country.  Ghous reportedly escaped in September 1997 when the Taliban captured that city, but he was not reappointed as foreign minister, and his whereabouts since then are not well known.

Mohammed Omar: Mullah Mohammed Omar (Pashto: ملا محمد عمر‎ , "Mullā Muḥammad ‘Umar"; c. 1960 – 23 April 2013), widely known as Mullah Omar, was the supreme commander and spiritual leader of the Taliban.  Under the title "Head of the Supreme Council," He was Afghanistan's head of state from 1996 to late 2001.  Omar died in 2013 of natural causes and was succeeded by Mullah Akhtar Mansour.

List of Iranian presidential elections: The tenth Iranian presidential election to be held in Iran.  The President of Iran is the highest official elected by direct, popular vote, although the President carries out the decrees, and answers to the Supreme Leader of Iran, who functions as the country's head of state.  Unlike the executive in other countries, the President of Iran does not have full control over anything, as these are ultimately under the control of the Supreme Leader.  Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates.  The procedures for presidential election and all other elections in Iran are outlined by the Supreme Leader.  The President functions as the executive of the decrees and wishes of the Supreme Leader.  These include signing treaties and other agreements with foreign countries and international organizations, with Supreme Leader's approval; administering national planning, budget, and state employment affairs, as decreed by the Supreme Leader.  The President also appoints the ministers, subject to the approval of Parliament, and the Supreme Leader who can dismiss or reinstate any of the ministers at any time, regardless of the president or parliament's decision.

Mohammad Rabbani: Mullah Mohammad Rabbani Akhund (1955–15 April 2001) was one of the main leaders of the Taliban movement.  He was second in power only to the supreme leader, Mullah Mohammed Omar, in the Taliban hierarchy.

President of Iran: The President of Iran (Persian: رییس‌جمهور ایران "Rayis Jomhur-e Irān") is the head of government of the Islamic Republic of Iran.  The President is the highest popularly elected official in Iran (however, the president is still required to gain the Leader’s official approval before being sworn in before the Parliament, and the Leader also has the power to dismiss the elected president anytime).  The President carries out the decrees, and answers to the Supreme Leader of Iran, who functions as the country's head of state.  Unlike the executive in other countries, the President of Iran does not have full control over anything, as these are ultimately under the control of the Supreme Leader.  Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates.  The procedures for presidential election and all other elections in Iran are outlined by the Supreme Leader.  The President functions as the executive of the decrees and wishes of the Supreme Leader.  These include signing treaties and other agreements with foreign countries and international organizations, with Supreme Leader's approval; administering national planning, budget, and state employment affairs, as decreed by the Supreme Leader.  The President also appoints the ministers, subject to the approval of Parliament, and the Supreme Leader who can dismiss or reinstate any of the ministers at any time, regardless of the president or parliament's decision.  Iran’s regional policy is directly controlled by the office of the Supreme Leader with the Ministry of Foreign Affairs’ task limited to protocol and ceremonial occasions.  All of Iran’s ambassadors to Arab countries, for example, are chosen by the Quds Corps, which directly reports to the Supreme Leader.

Mohammad Yaqoob: Mullah Mohammad Yaqoob or Mullah Yaqoob (Arabic/Pashto: ملا محمد يعقوب) is the eldest son of Mullah Mohammed Omar, the Afghan mujahideen commander, founder of the Taliban and the former Emir (Supreme Leader) of the Islamic Emirate of Afghanistan.  He was born in 1990.

Abdul Ghani Baradar: Mullah Abdul Ghani Baradar (Persian: عبدالغنی برادر; born c. 1968), also called Mullah Baradar Akhund or Mullah Brother, is a co-founder of the Taliban movement in Afghanistan.  He was the deputy of Mullah Mohammed Omar.  Baradar was captured in Pakistan by a team of Inter-Services Intelligence (ISI) and Central Intelligence Agency (CIA) in February 2010 and was released on 21 September 2013.

Supreme Leader of Iran: The Supreme Leader of Iran (Persian: رهبر معظم ایران‎ , "rahbar-e mo'azzam-e irān " ‎ ), also called the Supreme Leader of the Islamic Revolution (رهبر معظم انقلاب اسلامی , "rahbar-e mo'azzam-e enghelāb-e eslāmi "), officially in Iran, called the Supreme Leadership Authority (مقام معظم رهبری , "maqām mo'azzam rahbari "), is the head of state and highest ranking political and religious authority in the Islamic Republic of Iran.  The armed forces, judicial system, state television, and other key governmental organizations are under the control of the Supreme Leader of Iran.  The current longtime Supreme Leader of Iran, Ali Khamenei, has been issuing decrees and making the final decisions on economy, environment, foreign policy, education, national planning, and everything else in Iran.  Khamenei also makes the final decisions on the amount of transparency in elections in Iran, and has fired and reinstated Presidential cabinet appointments.  Iran’s regional policy is directly controlled by the office of the Supreme Leader with the Ministry of Foreign Affairs’ task limited to protocol and ceremonial occasions.  All of Iran’s ambassadors to Arab countries, for example, are chosen by the Quds Corps, which directly reports to the Supreme Leader.

Andar (Pashtun tribe): The Andar are a Ghilji Pashtun sub-tribe.  The Andar occupy nearly the whole of the extensive district of Shalgar south of Ghazni The Andar had been known for their skill and usage of large karez (underground irrigation systems).  More concentrated in Ghazni Province, they have also a significant presence in Paktia.  During the 19th century they joined in the Ghilji revolt and many were summarily sent into internal exile.  Somewhat inexplicably, they allied themselves for a time with the Harakat-i Islami, originally a Shia faction, during the anti-Soviet campaign.  In fact, there were two Mujaheddin parties named Harakat-i Islami Afghanistan, while one was a Shi'ite faction, the other and far more significant party was originally a 'united front' of mainly Hezb-i Islami and Jamiat-i Islami, that collapsed after only a few months, leaving behind a significant party that was in many ways a precursor to the present day Taliban movement.  A majority of the Andar tribe were affiliated with this 'Harakt-i Islami' and it is notable that the leader of this united front and later party, Mawlawi Mohammad Nabi Mohammadi was Andar by tribe.  Similarly, the senior Mawlawi Mansoor was Andar too.  Mansoor's son Saifurrahman Mansoor was later an important figure and military leader in the Taliban movement.

Akhund Mullah Mohammad Kashani: Akhund Mullah Mohammad Kashani, known as lunar tiles in 1833 was born in Kashan.  In place of his birth date and age of his birth is not mentioned during the 84 years of his life, to guess.  According to Syed Jalaluddin Homai, he, along with Jahangir Khan Qashqai as two distinguished professor in philosophy and jurisprudence, literature and jurisprudence have.  He taught for fifty years and foster outstanding students in the fields of intellectual and traditional sciences.  He died in 1914 in Isfahan and was buried in Takht-e Foulad.

Supporting paragraphs: Mohammad Rabbani Mohammed Omar
Answer: Mullah Mohammed Omar