Question: Batman Bridge is named after which grazier and entrepreneur?
Context: The Mark Morris Memorial Bridge (locally called the North Bridge) is a 2 lane truss bridge across the Mississippi River in the United States.  It connects the cities of Clinton, Iowa and Fulton, Illinois.  The bridge may also be known as the Lyons-Fulton Bridge, which was the name of a predecessor bridge and the name listed on the USGS topographical map.  The town of Lyons, Iowa, was annexed to Clinton in 1895, but the north end of the city is still referred to as Lyons.  The bridge is the terminus of both Iowa Highway 136 and Illinois Route 136.  The 1975 bridge was named in memory Mark Morris, a long time member of the City of Clinton Bridge Commission who died in 1972.  Morris was instrumental in the construction of the 1975 bridge and the City of Clinton Bridge Commission named it in his honor.  The bridge was opened in January 1975, replacing an older span upstream that once carried the Lincoln Highway, U.S. Route 30.)  In 1982, Iowa DOT announced that it would be removing a 20 cent toll from the Gateway Bridge and the Mark Morris bridge beginning January 1983.  Iowa and Illinois agreed to split responsibility for the maintenance of the two bridges with Iowa maintaining the Mark Morris bridge and Illinois the Gateway bridge. The Tamar Conservation Area covers approximately 4,633 ha on the Tamar River estuary in Tasmania.  It includes the Tamar Island Wetlands Reserve and a stretches through the upper part of the Tamar Estuary from St Leonards to the Batman Bridge.  It is a popular area for birdwatching and is about 15 minutes drive from Launceston.  There are approximately 3.2 km of walking tracks at the wetlands including a boardwalk for easy access to the island. John Batman (21 January 18016 May 1839) was an Australian grazier, entrepreneur and explorer.  He settled in the north-east of the Van Diemen's Land Colony in the 1820s, and later as a leading member of the Port Phillip Association he led an expedition which explored the Port Phillip Bay area on the Australian mainland with a view to establishing a new settlement there.  He is best known for his role in the founding of the settlement on the Yarra River which became the city of Melbourne, eventual capital of the new Colony of Victoria, and one of Australia's largest and most important cities. Batman Highway is a two-lane rural highway in northern Tasmania.  The highway links the East Tamar and West Tamar Highways via the Batman Bridge and provides the only crossing of the Tamar River north of the city of Launceston.  The highway also serves traffic from the West Tamar area to the port of Bell Bay. The Deviot Sailing Club is situated halfway between Launceston and Low Head on the Tamar River.  The club rooms are on the west side of the river just south of the Batman Bridge. Batman's Treaty was an agreement between John Batman, an Australian grazier, businessman and explorer, and a group of Wurundjeri elders, for the purchase of land around Port Phillip, near the present site of Melbourne.  The document came to be known as Batman's Treaty and is also considered significant as it was the first and only documented time when Europeans negotiated their presence and occupation of Aboriginal lands directly with the traditional owners.  The so-called treaty was implicitly declared void on 26 August 1835 by the Governor of New South Wales, Richard Bourke. The Batman River is a major tributary of the Tigris, joining it near the source of Tigris called Dicle River in southeast Turkey.  It originates in the Anti-Taurus Mountains (at the Sason and Genç mountains) and flows approximately from north to south, passing near the city of Batman and forming a natural border between the Batman Province and Diyarbakır Province.  The historic Malabadi Bridge (built in 1146–1147) crosses the river near the town of Silvan.  The region along the Batman River is known for its oil fields.  The Batman Dam (Turkish: "Batman Baraji" , B. de Batman on the map) was built in 1999 in the upstream ( ), together with the associated reservoir and hydroelectric power plant. Batman's Hill in Melbourne, Australia was named for the Vandemonian adventurer and grazier John Batman.  Now removed, the 18 metre high hill was located to the south of today's Collins Street and Southern Cross railway station, and is the site of a steel marker the same height as the original hill. Batman Province (Turkish: "" , Kurdish: Parêzgeha Batmanê‎ ) is a Turkish province southeast of Anatolia.  The province's population exceeded 500,000 in 2010.  The province is important because of its reserves and production of oil which was started in the 1940s.  There is a 494-km long oil pipeline from Batman to the Turkish port of İskenderun.  Cotton is the main agricultural product.  A railway line connects Batman with the nearby provinces of Diyarbakır and Elâzığ and with the capital Ankara.  The Batman River flows though the area.  Batman (Kurdish: Êlih‎ ) with 246,700 inhabitants, is the provincial capital.  The province is also of interest from an archeological point of view.  Sights include the Imam Abdullah Dervish monastery, the bridge of Camiü‘r Rızk and Hasankeyf.  The majority of the province's population is Kurdish. The Batman Bridge is a modern bridge spanning kanamaluka/Tamar River in the north of the Australian state of Tasmania.  The bridge is on the Batman Highway connecting the West Tamar Highway (state route A7) to the East Tamar Highway (state route A8).  The eastern end of the bridge is located at Whirlpool Reach, George Town and the western end is about halfway between Kayena and Deviot, Tasmania.  The bridge overlooks the Deviot Sailing Club and is named after John Batman, Launceston businessman and co-founder of Melbourne.
Answer: John Batman