Given the question: Information:  - The Armenian Highlands (also known as the Armenian Upland, Armenian plateau, Armenian tableland, or simply Armenia) is the central-most and highest of three land-locked plateaus. To its west is the Anatolian plateau which rises slowly from the lowland coast of the Aegean Sea and converges with the Armenian Highlands to the east of Cappadocia. To its southeast is the Iranian plateau, where the elevation drops rapidly by about to above sea level. The Caucasus extends to the northeast of the Armenian Highlands. To the southwest of the Armenian Highlands is Upper Mesopotamia.  - Armenia ( tr. "Hayastan"), officially the Republic of Armenia (tr. "Hayastani Hanrapetutyun"), is a sovereign state in the South Caucasus region of Eurasia. Located in Western Asia on the "Armenian Highlands", it is bordered by Turkey to the west, Russia and Georgia to the north and Azerbaijan to the east, and Iran and Azerbaijan's exclave of Nakhchivan to the south.  - Russia (from the  Rus'), also officially known as the Russian Federation, is a country in Eurasia. At , Russia is the largest country in the world by surface area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 140 million people at the end of March 2016. The European western part of the country is much more populated and urbanised than the eastern, about 77% of the population live in European Russia. Russia's capital Moscow is one of the largest cities in the world, other major urban centers include Saint Petersburg, Novosibirsk, Yekaterinburg, Nizhny Novgorod and Samara.  - Iran (, also , ; ' ), also known as Persia, officially the Islamic Republic of Iran (' ), is a sovereign state in Western Asia. It is bordered to the northwest by Armenia, the "de facto" Nagorno-Karabakh Republic, 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. Comprising a land area of , it is the second-largest country in the Middle East and the 18th-largest in the world. With 82.8 million inhabitants, Iran is the world's 17th-most-populous country. It is the only country with both a Caspian Sea and an Indian Ocean coastline. The country's central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, make it of great geostrategic importance. Tehran is the country's capital and largest city, as well as its leading economic center.  - Turkey, officially the Republic of Turkey (Turkish: ), is a transcontinental country in Eurasia, mainly in Anatolia in Western Asia, with a smaller portion on the Balkan peninsula in Southeast Europe. Turkey is a democratic, secular, unitary, parliamentary republic with a diverse cultural heritage. Turkey is bordered by eight countries: Greece to the west; Bulgaria to the northwest; Georgia to the northeast; Armenia, the Azerbaijani exclave of Nakhchivan and Iran to the east; and Iraq and Syria to the south. The Aegean Sea is to the west, the Black Sea to the north, and the Mediterranean Sea to the south. The Bosphorus, the Sea of Marmara, and the Dardanelles, which together form the Turkish Straits, divide Thrace and Anatolia; they also separate Europe and Asia. Turkey's location has given it geopolitical and strategic importance throughout history.  - Azerbaijan, officially the Republic of Azerbaijan, is a country in the South Caucasus region, situated at the crossroads of Southwest Asia and Southeastern Europe. It is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west and Iran to the south. The exclave of Nakhchivan is bounded by Armenia to the north and east, Iran to the south and west, while having an 8 km border with Turkey in the north west.  - Gagik Tsarukyan is an Armenian businessman, arm wrestler, and politician. He is seen as the most influential of Armenia's government-connected oligarchs, and a key business partner of former President Robert Kocharyan. owning over a dozen big businesses and living in a large mansion on a hilltop in the village of Arinj, overlooking the northern outskirts of Yerevan. Tsarukyan is the founder and former leader of the Prosperous Armenia political party, with it gaining 14.7% of the vote in an election. Gagik is also the president of Armenia's National Olympic Committee. (was reelected on December 4, 2008).  - Prosperous Armenia Party ( PAP ; Armenian :    , Bargavatch Hayastan kusaktsutyun , abbreviated as  BHK ) , is a political party in Armenia . It was founded by businessman Gagik Tsarukyan on 30 April 2004 , when the constituent congress of the party took place . Armenia 's second president Robert Kocharyan was instrumental in creation of the party ( some claiming Kocharyan himself established it ) . Kocharyan 's influence and role in the party is a subject of debate . In 2012 `` most analysts '' believed Kocharyan was `` closely involved in the party . '' Some `` believe that Kocharyan is the secret leader of the party '' , while others believe he has no influence over PAP .  - Eurasia is the combined continental landmass of Europe and Asia. The term is a portmanteau of its constituent continents. Located primarily in the Northern and Eastern Hemispheres, it is bordered by the Atlantic Ocean to the west, the Pacific Ocean to the east, the Arctic Ocean to the north, and by Africa, the Mediterranean Sea, and the Indian Ocean to the south. The division between Europe and Asia as two different continents is a historical and cultural construct, with no clear physical separation between them; thus, in some parts of the world, Eurasia is recognized as the largest of five or six continents. In geology, Eurasia is often considered as a single rigid megablock. However, the rigidity of Eurasia is debated based on the paleomagnet data.  - Robert Sedraki Kocharyan (; born 31 August 1954) is an Armenian politician who served as the second President of Armenia between 1998 and 2008. He was previously President of Nagorno-Karabakh from 1994 to 1997 and Prime Minister of Armenia from 1997 to 1998.  - Western Asia, West Asia, Southwestern Asia or Southwest Asia is the westernmost subregion of Asia. The concept is in limited use, as it significantly overlaps with the Middle East (or Near East), the main difference being the exclusion of Egypt (which would be counted as part of North Africa). The term is sometimes used for the purposes of grouping countries in statistics.  - Arinj, is a major village in the Kotayk Province of Armenia. The Town is an upscale suburb located just north of Yerevan, with several multimillionaires having their Mansions located there including Gagik Tsarukyan, the founder of the Prosperous Armenia party. The village is 41 km south of the provincial capital Hrazdan. As of the 2011 census, the population of the village is 6,220.    Given the paragraphs above, decide what entity has the relation 'headquarters location' with 'yerevan'.
The answer is:
prosperous armenia