Question: What river runs through the Indian city where a production site for Hanning Elektro-Werke GmbH und Co. is located?

Context paragraphs:
Mars Nederland: Mars Nederland (English: Mars Netherlands ) is the Dutch division of Mars, Incorporated, a privately held multi-national company in food, pet care products, and confectionery products.  It has its headquarters and main production site in Veghel, North Brabant.  A second production site is located in Oud-Beijerland, South Holland.  The chocolate factory in Veghel is the largest production site owned by Mars, Incorporated, and is among the largest chocolate factories in the world.

Bericap: Bericap GmbH und Co KG (a.k.a. Bericap Holding GmbH) is a privately owned German company producing closures for beverage containers and other purposes.  It operates from 18 plants globally and has approximately 2,000 employees and is one of the 5 largest beverage closure manufacturing companies in the world.

Hanning Elektro-Werke: Hanning Elektro-Werke GmbH und Co.  KG, (limited partnership with a limited liability company as general partner) a German family-owned company, was founded in 1947 by Robert Hanning.  Currently the company employs approximately 1,000 employees, only counting the various European locations and 1,500 worldwide.  The head office is situated in Oerlinghausen, in the state of North Rhine-Westphalia.  Further production sites are located in Eggesin (Germany), in Vilnius (Lithuania), Shenzhen (China) und Vadodara (India).

Schleicher Electronic: Schleicher Electronic GmbH und Co.  KG is a medium-sized technology company based in Berlin.

Hamburg Messe und Congress: Hamburg Messe und Congress GmbH (acronym: HMC) is a legal entity owned by the city Hamburg (full German name: Freie und Hansestadt Hamburg).  The Hamburg exhibition complex is host to more than 40 events managed by HMC or third-party organizers annually, drawing over 15,000 exhibitors and 700,000 visitors.  In addition, the CCH (Congress Center Hamburg) has hosted approximately 250 conferences, conventions, annual meetings and other events per annum until the end of 2016, attracting an additional 300,000 national and international attendees .  The owners of the CCH, CCH Immobilien GmbH & Co.  KG, launched a comprehensive remodeling and modernization campaign of the convention center in January, 2017.

Audna: Audna or Audnedalselva is a river in Vest-Agder county, Norway.  The 55 km long river runs from the lake Grindheimsvatnet, just north of the village of Byremo in Audnedal municipality, south through the Audnedalen valley to its mouth at the Snigsfjorden in Lindesnes municipality.  The mouth is located about 4 km southwest of the village of Vigeland.  The river has a drainage basin that covers 438 km2 .  The river runs through two lakes: Øvre Øydnavatnet and Ytre Øydnavatnet.

Newport Chemical Depot: The Newport Chemical Depot, previously known as the Wabash River Ordnance Works and the Newport Army Ammunition Plant, was a 6,990 acres bulk chemical storage and destruction facility that was operated by the United States Army.  It is located near Newport, in west central Indiana, thirty-two miles north of Terre Haute.  The site was used as a production site for the solid explosives trinitrotoluene and RDX, as well as for heavy water.  It also served as the production site for all of the U.S. military's nerve agent VX, when it was in use.

MSC Fabiola: MSC Fabiola is a container ship chartered by the Mediterranean Shipping Company (MSC) and operated by the Peter Döhle Schiffahrtsgesellschaft Gmbh und co.KG in Hamburg Germany, the largest such vessel ever to dock in North America.  In March 2012 the ship shifted from its initial Asia-to-Europe service to begin trans-Pacific service.  On March 16, 2012, "Fabiola" docked at the Port of Long Beach, breaking earlier records for the largest container ship at a U.S. port, and at any North American port.

Schwaben Bräu: Schwaben Bräu (also Schwabenbräu ) is a brewery owned by Dinkelacker-Schwaben Bräu GmbH und Co.  KG and located in Stuttgart, Germany.  The company owns the largest brewery in the German state of Baden-Württemberg .

Vadodara: Vadodara (] ; formerly known as Baroda), is the third largest city in the Western Indian State of Gujarat, after Ahmedabad and Surat.  It is the administrative headquarters of Vadodara District and is located on the banks of the Vishwamitri river, southeast of Ahmedabad, 139 km from the state capital Gandhinagar.  The railway line and NH 8 that connect Delhi and Mumbai pass through Vadodara.

Supporting paragraphs: Hanning Elektro-Werke Vadodara
Answer: Vishwamitri river,