Question: Mound is a city in Hennepin County, Minnesota, Mound is the birthplace of which truck, named after Lake Minnetonka, an American producer of toy trucks?
Context: Tonka is an American producer of toy trucks.  Maisto International, which makes diecast vehicles, acquired the rights to use the Tonka name in a line of 1:64 scale diecast vehicles, featuring mostly trucks.  The Winifred Museum in Winifred, Montana, has a collection of more than 3,000 Tonka toys. Hennepin County Library is a public library system serving the entire population of Hennepin County, Minnesota, USA.  The current iteration of Hennepin County Library was formed by the merger of urban Minneapolis Public Library and suburban Hennepin County Library on January 1, 2008.  The system has 41 library locations, deposit collections at nursing homes and correctional facilities, mail service to the homebound and extensive outreach services.  The Library is a department of Hennepin County Government.  The library headquarters are in the Ridgedale Library in suburban Minnetonka.  The library system has an eleven-member advisory Library Board appointed by the Hennepin County Board of Commissioners.  It is a member of the Metropolitan Library Service Agency, a consortium of eight Twin Cities library systems. Lost Lake is located entirely within the city limits of Mound, Minnesota.  It is part of Lake Minnetonka and considered by the city of Mound to be important to its re-development plans with the hope being that boat users will increase its downtown business traffic.  In the past, lake steamers used Lost Lake's channel or canal to bring tourists into the downtown area, when Lake Minnetonka was a resort area.  The channel has been re-dredged, docks have been built, and the clean-up of nearby contaminated soil has been done.  The lake's name is assumed to be based on its being nearly completely overgrown by cattails and reeds.  But that is said to serve the valuable purpose of filtering the surface runoff into Lake Minnetonka. Connie M. Doepke (born 1946) is a Minnesota politician and former member of the Minnesota House of Representatives representing District 33B, which included the Lake Minnetonka area cities of Deephaven, Excelsior, Greenwood, Long Lake, Minnetonka Beach, Orono, Shorewood, Tonka Bay, Wayzata, Woodland, and western Minnetonka in Hennepin County, which is part of the Twin Cities metropolitan area.  A Republican, she is also a direct marketing consultant, and a former vice president of fashion merchandising for Fingerhut. Cooks Bay, in Mound, Minnesota, is one of many lakes and bays that make up Lake Minnetonka.  Its area is about 550 acre .  It is South of Mound Bay Park, West of Island Park, and East of Mound's Highlands neighborhood.  Cooks Bay was known for its Grand Hotels early in the areas history, and for being the waterlink to Mound's downtown at that time.  The currently named, "Mound Bay Park" on Cook's Northshore used to be called "Surfside" and there was a supper club with that name located there.  Cooks has a public boat launch located at the park, and the old Mound depot was also moved to the park. Brookdale Library opened in its current location, 6125 Shingle Creek Parkway, Brooklyn Center in 1981.  As the first structure in Hennepin County to be built in compliance with Minnesota’s Sustainable Design Guide(now known as B3 Guidelines), it is one of three Hennepin County structures with a library, county courthouse, licensing and records services office, and social service and community corrections offices.  Initially, the Library’s space was 31,400 square feet, including three meeting rooms.  As the building abuts a swamp and nearby Shingle Creek, native plants were included in the landscaping, using trees, shrubs and plants that thrive in Minnesota’s weather and support native animals and insects.  A library in Brooklyn Center was part of Hennepin County’s long-range library construction program which was published by the 1969 Minnesota State Legislature, authorizing three libraries: Southdale-Hennepin Area Library (Edina, opened in 1973); Ridgedale Hennepin Area Library (Minnetonka, opened in 1982) ; and Brookdale Library. Mound Westonka High School is a grades 812 public high school in Mound, Minnesota.  Mound Westonka competes in the Wright County Conference.  Mound Westonka, located west of Lake Minnetonka, serves the westernmost portion of the lake and is located west of Minnetonka and south of Orono.  Mound Westonka houses over 900 students in grades 8-12.  It began as Mound Consolidated High School, which opened in the fall of 1917 in downtown Mound as part of District 85.  In 1958, District 85 became Westonka District 277.  In the fall of 1971, Mound High School was relocated several miles to a new building at its present location in Minnetrista and “Westonka” was added to its name.  Mound High School adopted the “Mohawk” mascot in the 1930s, in part because Mound was named for the ancient Indian mounds located within its borders.  In the fall of 1997, the school mascot was changed to the White Hawks. Spring Park is a city on Lake Minnetonka in Hennepin County, Minnesota, United States.  The population was 1,669 at the 2010 census.  It is located on Lake Minnetonka and has over 4 mi of shoreline while being less than 0.5 sqmi in area.  It was incorporated in 1951 and at that time had a population of a little over 200.  Its most well known business is Lord Fletcher's, a bar and restaurant on the lake, and is the site of Presbyterian Homes Senior living complex. Halstead's Bay (sometimes spelled Halsted's) is the western most bay of Lake Minnetonka.  It is in the cities of Minnetrista and Mound, in Hennepin County, Minnesota.  It is named for the settler Frank W. Halsted, who migrated to its shores in 1855.  Its main tributary is Six Mile Creek that enters the bay from the west.  Access to the bay is provided by a public boat launch along Halstead's Drive. Mound is a city in Hennepin County, Minnesota, United States.  The population was 9,052 at the 2010 census.  Mound is the birthplace of the Tonka truck, named after Lake Minnetonka.  The Tonka Toys headquarters was originally in Mound, but moved to facilitate material deliveries.  Mound is about twenty miles west of downtown Minneapolis, the county seat.
Answer: Tonka