With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Iran possesses the biggest natural gas reserve on the earth.
text_B: Iran -LRB- ɪ , also ɪ -RRB- , formerly known as Persia , is a sovereign state in Western Asia .. sovereign state. sovereign state. Western Asia. Western Asia. It is bordered to the northwest by Armenia , the de facto Republic of Artsakh and Azerbaijan ; to the north by the Caspian Sea ; to the northeast by Turkmenistan ; to the east by Afghanistan and Pakistan ; to the south by the Persian Gulf and the Gulf of Oman ; and to the west by Turkey and Iraq .. Persian. Persian language. de facto. de facto. Armenia. Armenia. Republic of Artsakh. Nagorno-Karabakh Republic. Azerbaijan. Azerbaijan. Caspian Sea. Caspian Sea. Turkmenistan. Turkmenistan. Afghanistan. Afghanistan. Pakistan. Pakistan. Persian Gulf. Persian Gulf. Gulf of Oman. Gulf of Oman. Turkey. Turkey. Iraq. Iraq. Comprising a land area of 1648195 km2 , it is the second-largest country in the Middle East and the 18th-largest in the world .. Middle East. Middle East. 18th-largest in the world. List of countries and dependencies by area. Officially with 79.93 million inhabitants -LRB- Nov 2016 -RRB- , Iran is the world 's 18th-most-populous country .. 18th-most-populous country. List of countries and dependencies by population. It is the only country with both a Caspian Sea and an Indian Ocean coastline .. Caspian Sea. Caspian Sea. Indian Ocean. Indian Ocean. The country 's central location in Eurasia and Western Asia , and its proximity to the Strait of Hormuz , make it of great geostrategic importance .. Western Asia. Western Asia. Strait of Hormuz. Strait of Hormuz. geostrategic. geostrategic. Iran has diverse landscapes and geographical conditions .. Tehran is the country 's capital and largest city , as well as its leading economic and cultural center .. Tehran. Tehran. Iran is home to one of the world 's oldest civilizations , beginning with the formation of the Elamite kingdoms in the 4th millennium BC .. The area was first unified and dominated by the Iranian Medes in the 7th century BC .. Iranian. Iranian peoples. Medes. Medes. Iran reached its greatest extent during the Achaemenid Empire -LRB- First Persian Empire -RRB- founded by Cyrus the Great in 6th century BC , the largest empire the world had yet seen , stretching from Eastern Europe to the Indus Valley .. Persian. Persian language. Achaemenid Empire. Achaemenid Empire. Cyrus the Great. Cyrus the Great. Eastern Europe. Eastern Europe. Indus Valley. Indus Valley. Persia fell to Alexander the Great in 4th century BC , but reemerged shortly after as the Parthian Empire .. Parthian Empire. Parthian Empire. Alexander the Great. Alexander the Great. Under the Sassanians , Persia became a leading world power for the next four centuries .. Sassanians. Sassanid Empire. In 7th century AD , Arabs conquered Persia and largely displaced the indigenous faiths of Zoroastrianism and Manichaeism with the new religion of Islam .. Islam. Islam. Zoroastrianism. Zoroastrianism. Arabs conquered Persia. Muslim conquest of Persia. Manichaeism. Manichaeism. Iranians became major contributors to the Islamic Golden Age that followed , producing many influential scientists , scholars , artists and thinkers .. Islamic Golden Age. Islamic Golden Age. After two centuries , a period of various Iranian dynasties began , although these dynasties were later conquered by Turks and then the Mongols .. Iranian. Iranian peoples. period of various Iranian dynasties began. Iranian Intermezzo. conquered by Turks. Seljuk Empire. the Mongols. Ilkhanate. An Iranian national identity was always reasserted however , developing a distinct cultural entity .. Iranian. Iranian peoples. a distinct cultural entity. Greater Iran. The rise of the Safavids in 15th century led to the establishment of Twelver Shia Islam as the official religion , marking a turning point in Muslim history .. Islam. Islam. Shia. Shia Islam. Safavids. Safavid dynasty. Twelver Shia. Twelver Shia. Muslim history. History of Islam. In the 18th century , Iran arguably possessed briefly the most powerful military at the time under Nader Shah .. Nader Shah. Nader Shah. Conflicts with the Russian Empire in 19th century led to significant territorial losses .. Russian Empire. Russian Empire. Popular unrest culminated in the Persian Constitutional Revolution , which established a constitutional monarchy and the country 's first legislative body , the Majles .. Persian. Persian language. Persian Constitutional Revolution. Persian Constitutional Revolution. constitutional monarchy. constitutional monarchy. Majles. Majles. Following a coup d'etat instigated by the UK and the US in 1953 , Iran gradually became closely aligned with the West and grew increasingly autocratic .. coup d'etat instigated by the UK and the US in 1953. 1953 Iranian coup d'etat. Growing dissent against foreign influence and political repression led to the 1979 Revolution and the establishment of an Islamic republic , a political system which combines elements of a parliamentary democracy with a theocracy governed by Islamic jurists under the concept of a `` Supreme Leadership '' .. 1979 Revolution. 1979 Revolution. Islamic republic. Islamic republic. political system. Politics of Iran. parliamentary democracy. parliamentary democracy. theocracy. theocracy. Islamic jurists. Guardianship of the Islamic Jurists. Supreme Leadership. Supreme Leader of Iran. According to international observers , the current Iranian government is oppressive , with human rights abuses commonplace .. Iranian. Iranian peoples. A multicultural country comprising numerous ethnic and linguistic groups , most inhabitants of Iran are Shia Muslims and Persian is the official language .. Persian. Persian language. Shia. Shia Islam. numerous ethnic and linguistic groups. Demography of Iran. Shia Muslims. Shia Muslims. The largest ethnic groups in Iran are the Persians , Azeris , Kurds and Lurs .. Persians. Persian people. Azeris. Azerbaijanis. Kurds. Kurds. Lurs. Lurs. Iran is a founding member of the UN , ECO , NAM , OIC , and OPEC .. United Nations. ECO. Economic Cooperation Organization. NAM. Non-Aligned Movement. OIC. Organisation of Islamic Cooperation. OPEC. OPEC. Iran is a major regional and middle power , and its large reserves of fossil fuels -- which include the largest natural gas supply in the world and the fourth-largest proven oil reserves -- exert considerable influence in international energy security and the world economy .. regional. regional power. middle power. middle power. fossil fuels. fossil fuels. natural gas supply. Natural gas reserves in Iran. oil reserves. oil reserves. international energy security. Energy superpower#Iran. world economy. List of countries by GDP ( PPP ). Iran 's rich cultural legacy is reflected in part by its 21 UNESCO World Heritage Sites , the third-largest number in Asia and 11th-largest in the world .. UNESCO World Heritage Sites. List of World Heritage Sites in Iran
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