Question: Which capitol city is also the second largest city in the United States by area?

Context paragraphs:
Stoll Bottling Works: The Stoll Bottling Works is a historic building located in Boone, Iowa, United States.  The 135 by brick building was built between 1913 and 1914.  It was one of the buildings in town that housed a plant for producing and bottling carbonated soft drinks, a significant industry in Boone.  Louis Stoll had begun working at the Selling Soda Company when he was a teenager.  He bought the company in 1912 when he was 21.  Four years later his former supervisor at Selling, Frank Linderblood, bought the company and Stoll moved to Des Moines where he owned Capitol City Bottling Works.  By the mid-20th century the national brands had plants in Boone.  This building was listed on the National Register of Historic Places in 1989.  It mistakenly lists this building as the Stoll Building Works.

Osaka: Osaka (大阪市 , Ōsaka-shi ) (] ;    ) is a designated city in the Kansai region of Japan.  It is the capital city of Osaka Prefecture and the largest component of the Keihanshin Metropolitan Area, the second largest metropolitan area in Japan and among the largest in the world with over 19 million inhabitants.  Situated at the mouth of the Yodo River on Osaka Bay, Osaka is the second largest city in Japan by daytime population after Tokyo's 23 wards and the third largest city by nighttime population after Tokyo's 23 wards and Yokohama, serving as a major economic hub for the country.

Capitol City Plume Superfund site: The Capitol City Plume, which also is referred to as the Capital City Plume, is an area of contaminated groundwater located beneath the western downtown area of Montgomery, Alabama.  The contamination was discovered in 1993 by the Alabama Department of Environmental Management (ADEM) which was investigating soil contamination at the Retirement Systems of Alabama Energy Plant in the city.  After assessment by the United States Environmental Protection Agency (EPA) it was proposed for inclusion in the National Priorities List (NPL) in May 2000.

Chula Vista, California: Chula Vista ( ; Spanish: "beautiful view" ) is the second largest city in the San Diego metropolitan area, the seventh largest city in Southern California, the fourteenth largest city in the state of California, and the 76th-largest city in the United States.  The population was 243,916 as of the 2010 census.

Ostrava: Ostrava (Polish: "Ostrawa" , German: "Ostrau" or "Mährisch Ostrau") is a city in the north-east of the Czech Republic and is the capital of the Moravian-Silesian Region.  It is 15 km from the border with Poland, at the meeting point of four rivers: the Odra, Opava, Ostravice and Lučina.  In terms of both population and area Ostrava is the third largest city in the Czech Republic, the second largest city in Moravia, and the largest city in Czech Silesia; it straddles the border of the two historic provinces of Moravia and Silesia.  The population was around 300,000 in 2013.  The wider conurbation – which also includes the towns of Bohumín, Doubrava, Havířov, Karviná, Orlová, Petřvald and Rychvald – is home to around 500,000 people, making it the largest urban area in the Czech Republic apart from the capital, Prague.

Alaska State Capitol: The Alaska State Capitol is located in the state capital of Juneau at the corner of East 4th Street and Main Street.  It houses the Alaska Legislature and the offices for the governor of Alaska and lieutenant governor of Alaska.

Juneau, Alaska: The City and Borough of Juneau ( ; Tlingit: "Dzánti K'ihéeni" [ˈtsántʰì kʼìˈhíːnì] ), commonly known as Juneau, is the capital city of Alaska.  It is a unified municipality located on the Gastineau Channel in the Alaskan panhandle, and it is the second largest city in the United States by area.  Juneau has been the capital of Alaska since 1906, when the government of what was then the District of Alaska was moved from Sitka as dictated by the U.S. Congress in 1900.  The municipality unified on July 1, 1970, when the city of Juneau merged with the city of Douglas and the surrounding Greater Juneau Borough to form the current municipality, which is larger by area than both Rhode Island and Delaware.

Oakland, California: Oakland is the largest city and the county seat of Alameda County, California, United States.  A major West Coast port city, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the San Francisco Bay Area, the eighth largest city in California, and the 45th largest city in the United States, with a population of 419,267 as of 2015 .  It serves as a trade center for the San Francisco Bay Area; its Port of Oakland is the busiest port in the San Francisco Bay, the entirety of Northern California, and the fifth busiest in the United States of America.  The city was incorporated in 1852.

St. Paul Curling Club: The St. Paul Curling Club (SPCC) is an historic curling club located in Saint Paul, Minnesota, United States, on Selby Avenue.  It is the curling club with the largest active membership in the United States at over 1200 members.  It was first established in 1885, and the present St. Paul CC was established when the Capitol City Curling Club and Nushka Curling Club merged in 1912.  It is the oldest curling club in Minnesota.  The club hosted the 2011 World Mixed Doubles Curling Championship and the 2011 World Senior Curling Championships in April 2011.

Great Falls, Montana: Great Falls is a city in and the county seat of Cascade County, Montana, United States.  The 2015 census estimate put the population at 59,638.  The population was 58,505 at the 2010 census.  It is the principal city of the Great Falls, Montana Metropolitan Statistical Area, which encompasses all of Cascade County and has a population of 82,278.  Great Falls was the largest city in Montana from 1950 to 1970, when Billings surpassed it.  Great Falls remained the second largest city in Montana until 2000, when it was passed by Missoula.  Since then Great Falls has been the third largest city in the state.

Supporting paragraphs: Alaska State Capitol Juneau, Alaska
Answer: Juneau