15 Central Park West is a condominium apartment building located at the corner of West 61st Street and Central Park West in New York City.
 Construction started in 2005 and was completed in 2008, costing a total of $950 million ($ in current dollar terms).
 The building was designed in a New Classical style by Robert A.M. Stern Architects.
Rossleigh Court, constructed between 1906 and 1907, currently is a rental apartment building located on the northwest corner of 85th Street and Central Park West in the Upper West Side of Manhattan in New York City.
Edward Severin Clark (July 6, 1870 – September 19, 1933), was an American businessman, and the owner of the New York City apartment building The Dakota.
72nd Street is a local station on the IND Eighth Avenue Line of the New York City Subway.
 Located at 72nd Street and Central Park West on the Upper West Side, it is served by the C train at all times except nights, when the A train takes over service.
 The B train provides additional service here on weekdays except nights.
101 is a residential building located at 101 Central Park West between 70th and 71st street in New York City.
 The apartment building was constructed in 1929 in the Neo-Renaissance style by architects Simon Schwartz & Arthur Gross.
 It is situated next to The Majestic, an apartment complex located between 71st and 72nd Street and to Congregation Shearith Israel which is located on 70th Street.
 The building is divided into three blocks which all consist of two elevator banks.
 Past and present residents of the building include notable personalities such as Harrison Ford, Rick Moranis and Rabbi Norman Lamm, the chancellor of Yeshiva University.
257 Central Park West, constructed between 1905 and 1906, currently is a co-op apartment building located on the southwest corner of 86th Street and Central Park West in the Upper West Side of Manhattan in New York City.
The Dakota, also known as Dakota Apartments, is a cooperative apartment building located on the northwest corner of 72nd Street and Central Park West in the Upper West Side of Manhattan in New York City, United States.
 It was built in 1884 and is considered to be one of Manhattan's most prestigious and exclusive cooperative residential buildings.
Harperly Hall (also known as 41 Central Park West) is an apartment building on the Upper West Side of Manhattan, New York City.
 The building is located along prestigious Central Park West and was built in 1910, it opened in 1911.
 Cast in the Arts and Crafts style, a rarity for New York City, Harperly Hall was designed by Henry W. Wilkinson.
 The structure was listed as a contributing property to the U.S. federal government designated Central Park West Historic District in 1982 when the district joined the National Register of Historic Places.
 At one time it was known as the Madonna building as Sean Penn and singer Madonna lived there.
The Langham is a luxury apartment building located at 135 Central Park West on the Upper West Side of Manhattan, New York City.
 After the site was unused for more than 15 years, the building was constructed between 1905 and 1907.
 Built at a cost of US $2 million, the structure included modern amenities, such as ice accessible from every apartment.
 The building was designed in the French Second Empire style by architects Clinton and Russell.
 It was listed as a contributing property to the federal government designated Central Park West Historic District on November 9, 1982.
The Olcott Hotel is an establishment on West 72nd street in New York City's Upper West Side.
 It was built by the Lapidus Engineering Company beginning in late 1925.
 The edifice was one of a number of structures constructed at the time from Central Park West to Columbus Avenue on 72nd Street, in New York City.
 The Fairfield Hotel was another building going up concurrently.
 Its builder was Louis Israelson and Associates.
 The Olcott Hotel was sixteen stories when it was completed.
 It opened in 1930.

Question: Which cooperative apartment building located on the northwest corner of 72nd Street and Central Park West was owned by Edward Severin Clark?
Answer: The Dakota