Question: Which body of water is by the place where Sergei Toporov died?

full_context: Document 1: Molmys River: Molmys River () is a river in Perm Krai, Russia, a left tributary of the Yazva River. It is long, and the area of its drainage basin is . It starts on the southeastern slope of Mount Vogulsky Kamen, in the middle part of the Kvarkush mountain range. It flows through the southeastern portion of Krasnovishersky District, its mouth located upstream of the settlement Krasnyi Bereg. There are many rapids throughout the river, and the bottom is rocky.
Document 2: Jiří Pernes: Between 1984-1990 he was director of the Historical Museum in Slavkov u Brna (Austerlitz), then between 1990-1992 he was director of the Moravské zemské muzeum in Brno. In 2011 he directed the Institute for the Study of Totalitarian Regimes. Jiří Pernes held lectures at the Masaryk University in Brno and at the Jan Evangelista Purkyně University in Ústí nad Labem.
Document 3: Krasnovishersky District: Krasnovishersky District () is an administrative district (raion) of Perm Krai, Russia; one of the thirty-three in the krai. Municipally, it is incorporated as Krasnovishersky Municipal District. It is located in the northeast of the krai, in the valley of the Vishera River, and borders with the Komi Republic in the north, Sverdlovsk Oblast in the east, Cherdynsky District in the west, Solikamsky District in the south, and with the territory of the town of krai significance of Alexandrovsk in the southeast. The area of the district is . Its administrative center is the town of Krasnovishersk. Population: The population of Krasnovishersk accounts for 71.4% of the district's total population.
Document 4: Persimfans: Persimfans was a conductorless orchestra in Moscow in the Soviet Union that was founded by Lev Tseitlin and existed between 1922 and 1932. Its name is an abbreviation for "Pervïy Simfonicheskiy Ansambl' bez Dirizhyora" (First Conductorless Symphony Ensemble).
Document 5: Tura River: The Tura River (), also known as Dolgaya River (Long River, ) is a historically important Siberian river which flows eastward from the central Ural Mountains into the Tobol River, a part of the Ob River basin. The main town on it is Tyumen.
Document 6: Alexander Polovtsov: Polovtsov was the initiator of the creation of the Russian Historical Society (created in 1865). He was the Secretary of the society in 1866-1879 and the Chairman of the society from 1879 until his death in 1909. The society commissioned works of such historians as Sergey Solovyov, Nikolay Kostomarov, Vasily Klyuchevsky who set the foundation for the History of Russia. Under Polovtsov the society published 128 volumes of "Sborniks of Russian Historical Society". Polovtsov also prepared the 25 volumes of the Russian Biographical Dictionary that played an important role as the source of the biographical data on Russian people. To correctly establish the notability Polovtsov refused to include biographies of living people. Polovtsov (together with his father-in-law Alexander von Stieglitz founded the Stieglitz Museum of Applied Arts.
Document 7: Ay River: Ay River (, ) is a river in Bashkortostan and Chelyabinsk Oblast in Russia, a left tributary of the Ufa River. The river is long, and its drainage basin covers . The Ay freezes up in late October or early November and remains icebound until mid-April. The cities of Zlatoust and Kusa are along the Ay River. Along the banks of the river, there are many steep cliff sides and caves. The current of the river has been used for hydroelectric power. It is also possible to fish for pike, bleak, and carp, to name a few species.
Document 8: Russian Geographical Society: The society was founded on 6 (18) August 1845 in Saint Petersburg, Russia. Prior to the Russian Revolution of 1917, it was known as the Imperial Russian Geographical Society.
Document 9: Russian Geographical Society: The society reverted to its original name upon the dissolution of the Soviet Union in 1991. The main offices of the Society are in St. Petersburg.
Document 10: Leninsky City District, Perm: Leninsky City District () is one of the seven city districts of the city of Perm in Perm Krai, Russia. Population: It is the least populous city district of Perm.
Document 11: Chelyabinsk: Chelyabinsk () is a city and the administrative center of Chelyabinsk Oblast, Russia, located in the northeast of the oblast, south of Yekaterinburg, just to the east of the Ural Mountains, on the Miass River, on the border of Europe and Asia. Population:
Document 12: Dissolution of the Soviet Union: On March 4, 1989, the Memorial Society, committed to honoring the victims of Stalinism and cleansing society of Soviet practices, was founded in Kiev. A public rally was held the next day. On March 12, A pre-election meeting organized in Lviv by the Ukrainian Helsinki Union and the Marian Society Myloserdia (Compassion) was violently dispersed, and nearly 300 people were detained. On March 26, elections were held to the union Congress of People's Deputies; by-elections were held on April 9, May 14, and May 21. Among the 225 Ukrainian deputies, most were conservatives, though a handful of progressives made the cut.
Document 13: Sergei Toropov: January 19, 1982, a club "Permsky Krayeved" (, Perm Regional Ethnographer) was created in Perm. Toropov became its first chairman. Club sessions at different years took place at Regional Station of Young Tourists, in House of Teachers, in Perm Region State Archive. Since 1991 club meetings was conducted monthly in Regional Library.
Document 14: Perm: Perm (;) is a city and the administrative centre of Perm Krai, Russia, located on the banks of the Kama River in the European part of Russia near the Ural Mountains.
Document 15: Gornozavodsky District: Gornozavodsky District () is an administrative district (raion) of Perm Krai, Russia; one of the thirty-three in the krai. Municipally, it is incorporated as Gornozavodsky Municipal District. It is located on the western slopes of the Ural Mountains in the east of the krai. The area of the district is . Its administrative center is the town of Gornozavodsk. Population: The population of Gornozavodsk accounts for 46.3% of the district's total population.
ground_truth: Kama River
sub_queries: Sergei Toropov >> place of death Answer: Perm
Which is the body of water by Perm ? Answer: Kama River