Answer the following question: Information:  - The Russian Orthodox Church (ROC), alternatively legally known as the Moscow Patriarchate, is one of the autocephalous Eastern Orthodox churches, in full communion with other Eastern Orthodox patriarchates. The Primate of the ROC is the Patriarch of Moscow and all Rus'. The ROC, as well as the primate thereof, officially ranks fifth in the Orthodox order of precedence, immediately below the four ancient Patriarchates of the Greek Orthodox Church, those of Constantinople, Alexandria, Antioch, and Jerusalem. The official Christianization of Kievan Rus' widely seen as the birth of the ROC is believed to have occurred in 988 through the baptism of the Kievan prince Vladimir and his people by the clergy of the Ecumenical Patriarchate whose constituent part the ROC remained for the next six centuries, while the Kievan see remained in the jurisdiction of the Ecumenical Patriarchate until 1686.  - Peter the Great, Peter I or Peter Alexeyevich (  ) ruled the Tsardom of Russia and later the Russian Empire from 7 May (O.S. 27 April) 1682 until his death, jointly ruling before 1696 with his elder half-brother, Ivan V. Through a number of successful wars he expanded the Tsardom into a much larger empire that became a major European power. He led a cultural revolution that replaced some of the traditionalist and medieval social and political systems with ones that were modern, scientific, westernized, and based on The Enlightenment. Peter's reforms made a lasting impact on Russia and many institutions of Russian government trace their origins to his reign.  - Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium. It is formed when layers of decomposing plant and animal matter are exposed to intense heat and pressure under the surface of the Earth over millions of years. The energy that the plants originally obtained from the sun is stored in the form of chemical bonds in the gas.  - Yukon (also commonly called the Yukon) is the westernmost and smallest of Canada's three federal territories (the other two are Northwest Territories and Nunavut). The territory is very sparsely populated with its about 35,000 people on almost half a million square kilometres. Whitehorse is the territorial capital and Yukon's only city.  - Russia, also officially known as the Russian Empire, was a state that existed from 1721 until it was overthrown by the short-lived liberal February Revolution in 1917. One of the largest empires in world history, stretching over three continents, the Russian Empire was surpassed in landmass only by the British and Mongol empires. The rise of the Russian Empire happened in association with the decline of neighboring rival powers: the Swedish Empire, the PolishLithuanian Commonwealth, Persia and the Ottoman Empire. It played a major role in 181214 in defeating Napoleon's ambitions to control Europe, and expanded to the west and south.  - Aleksei Ilyich Chirikov (1703  November 1748) was a Russian navigator and captain who along with Bering was the first Russian to reach North-West coast of North America. He discovered and charted some of the Aleutian Islands while he was deputy to Vitus Bering during the Great Northern Expedition.   - Gerasim Grigoryevich Izmaylov ( Russian :    ; circa 1745 - after 1795 ) was a Russian navigator involved in the Russian colonization of the Americas and in the establishment of the colonies of Russian America in Alaska . He was responsible for the first detailed maps of the Aleutian Islands . A native of Yakutsk , Izmaylov attended a navigation school in Okhotsk with Dmitry Bocharov , who became his lifelong business companion . In 1771 , both were caught up in the Benevsky mutiny on Bolsheretsky island in Kamchatka . Izmaylov attempted to break away from the mutineers but , after being flogged , was marooned on the isle of Simushir , one of the uninhabited Kuril Islands . For a year he subsisted on `` scallops , grass , and roots '' before being rescued by yasak gatherers . He was tried in Irkutsk on charges of mutiny , but was eventually cleared in 1774 . In 1775 , Izmaylov assumed command of the boat St. Paul and set to work mapping the shores of the Aleutian Islands . On October 1778 , while visiting Unalaska , he made the acquaintance of Captain James Cook who presented him a sword and a Mercator map in exchange for a letter of introduction to the Kamchatka authorities . He also handed over to Izmaylov a recently drawn map of the western coast of North America , which was to be delivered by the Russians to the British Admiralty . In 1783 - 1785 , Izmaylov and Grigory Shelikhov made their historic voyage from Okhotsk to Kodiak Island , where they founded the first Russian settlement in America . In 1789 , Izmaylov became the first to explore and map the Kenai Peninsula . Three years later , he took up employment under Alexander Baranov , helping him withstand a sea attack by the Tlingit . Having wintered in Unalaska , Izmaylov visited Saint Paul Island , where he discovered the crew of a Russian ship that had been missing since 1791 . He brought them back to Okhotsk in June 1794 . He is mentioned for the last time in 1795 , when he accompanied to Alaska a group of Orthodox missionaries under Father Joasaph .  - Vitus Jonassen Bering (baptised 5 August 1681, died 19 December 1741), also known as Ivan Ivanovich Bering, was a Danish cartographer and explorer in Russian service, and an officer in the Russian Navy. He is known as a leader of two Russian expeditions, namely the First Kamchatka Expedition and the Great Northern Expedition, exploring of the north-eastern coast of the Asian continent and from there the western coast on the North American continent. The Bering Strait, the Bering Sea, Bering Island, the Bering Glacier and the Bering Land Bridge were all named in his honor.  - Russian America ("Russkaya Amerika") was the name of the Russian colonial possessions in North America from 1733 to 1867. Settlements spanned parts of what are now the US states of California, Alaska, and two ports in Hawaii. Formal incorporation of the possessions by Russia did not take place until the Ukase of 1799 which established a monopoly for the RussianAmerican Company and also granted the Russian Orthodox Church certain rights in the new possessions. Many of its possessions were abandoned in the 19th century. In 1867 Russia sold its last remaining possessions to the United States for $7.2 million ($120 million in 2013 dollars).  - The Bering Strait ("Beringov proliv", Yupik: "Imakpik") is a strait of the Pacific, which borders with the Arctic to north. It is located between Russia and the United States. Named after Vitus Bering, a Danish-born explorer in the service of the Russian Empire, it lies slightly south of the Arctic Circle being at about 65° 40' N latitude. The present Russia-US east-west boundary is at 168° 58' 37" W.  - The Russian colonization of the Americas covers the period from 1732 to 1867, when the Russian Empire laid claim to northern Pacific Coast territories in the Americas. Russian colonial possessions in the Americas are collectively known as Russian America. Russian expansion eastward began in 1552, and in 1639 Russian explorers reached the Pacific Ocean. In 1725, Emperor Peter the Great ordered navigator Vitus Bering to explore the North Pacific for potential colonization. The Russians were primarily interested in the abundance of fur-bearing mammals on Alaska's coast, as stocks had been depleted by overhunting in Siberia. Bering's first voyage was foiled by thick fog and ice, but in 1741 a second voyage by Bering and Aleksei Chirikov made sight of the North American mainland.  - Fishing is the activity of trying to catch fish. Fish are normally caught in the wild. Techniques for catching fish include hand gathering, spearing, netting, angling and trapping. Fishing may include catching aquatic animals other than fish, such as molluscs, cephalopods, crustaceans, and echinoderms. The term is not normally applied to catching farmed fish, or to aquatic mammals, such as whales where the term whaling is more appropriate.  - A U.S. state is a constituent political entity of the United States of America. There are 50 states, which are bound together in a union with each other. Each state holds administrative jurisdiction over a defined geographic territory, and shares its sovereignty with the United States federal government. Due to the shared sovereignty between each state and the federal government, Americans are citizens of both the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons covered by certain types of court orders (e.g., paroled convicts and children of divorced spouses who are sharing custody).  - British Columbia (BC) is the westernmost province of Canada, with a population of more than four million people located between the Pacific Ocean and the Rocky Mountains.  British Columbia is also a component of the Pacific Northwest and the Cascadia bioregion, along with the U.S. states of Idaho, Oregon, Washington and Alaska.  - 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.  - Hawaii is the 50th and most recent state to have joined the United States of America, having received statehood on August 21, 1959. Hawaii is the only U.S. state located in Oceania and the only one composed entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean. Hawaii is the only U.S. state not located in the Americas.  - Alaska is a U.S. state located in the northwest extremity of North America. The Canadian administrative divisions of British Columbia and Yukon border the state to the east; its most extreme western part is Attu Island; it has a maritime border with Russia to the west across the Bering Strait. To the north are the Chukchi and Beaufort seasthe southern parts of the Arctic Ocean. The Pacific Ocean lies to the south and southwest. Alaska is the largest state in the United States by area, the 3rd least populous and the least densely populated of the 50 United States. Approximately half of Alaska's residents (the total estimated at 738,432 by the U.S. Census Bureau in 2015) live within the Anchorage metropolitan area. Alaska's economy is dominated by the fishing, natural gas, and oil industries, resources which it has in abundance. Military bases and tourism are also a significant part of the economy.  - The Arctic Ocean is the smallest and shallowest of the world's five major oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Mediterranean Sea or simply the Arctic Sea, classifying it a mediterranean sea or an estuary of the Atlantic Ocean. Alternatively, the Arctic Ocean can be seen as the northernmost part of the all-encompassing World Ocean.    After reading the paragraphs above, we are interested in knowing the entity with which 'gerasim izmailov' exhibits the relationship of 'occupation'. Find the answer from the choices below.  Choices: - angling  - canada  - captain  - carbon  - cartographer  - clergy  - emperor  - explorer  - major  - military  - navigator  - patriarch  - primate  - united states of america
Answer:
explorer