Question: What is the population of the town where McPherson Opera House is? 

Context paragraphs:
Warren Opera House Block and Hetherington Block: The Warren Opera House Block and Hetherington Block are historic buildings located in Greenfield, Iowa, United States.  They are both 2½-story brick structures.  The Opera House block, originally owned by E.E. Warren, is located on the corner and features a corner turret.  It housed Warren's dry goods store and a theatre.  The adjacent commercial block was originally owned by John J. Heatherington, and is similar in style to the Opera House block.  Both buildings feature facades with a tripartite arrangement and center frontispieces that project slightly forward, a broad rock-faced beltcourse that runs above the second floor windows, a narrow metal cornice, and a brick parapet with finials.  The Opera House's parapet has a triangular pediment with "Opera House" on a rectangular base, and the Hetherington Block has a similar feature in a simplified form.  The buildings were listed together on the National Register of Historic Places in 1979.  In 2014 they were included as a contributing property in the Greenfield Public Square Historic District.

Lexington Opera House: The Lexington Opera House is a theatre located at 401 West Short Street in downtown Lexington, Kentucky.  Built in 1886, the Opera House replaced the former theatre, located on the corner of Main and Broadway, after fire destroyed it in January 1886.  The new Opera House was designed by the renowned architect Oscar Cobb and is listed on the National Register of Historic Places for its historical and architectural significance.  Now owned and operated by the Lexington Center Corporation, the Lexington Opera House is host to ballet, opera, children's productions, family shows, comedy, music and professional national Broadway tours.  The Lexington Opera House is one of the only 14 theatres in the country built before 1900 with less than 1,000 seats that is still in operation as a live performance venue.

Phoenix Opera House Block: The Phoenix Opera House Block is a historic building in Rushville, Illinois.  Built in 1882, the building housed commercial businesses on the first floor and an opera house on the second floor.  The opera house hosted traveling performers and theater companies as well as local social events.  The opera house closed in 1910, as churches began to host the town's social functions and the local movie theater provided entertainment.  From 1924 to 1956, the opera house served as a Masonic lodge.  The building is one of the few surviving examples of a combined opera house and commercial building.

McPherson Opera House: McPherson Opera House is an historic opera building at 221 South Main Street in McPherson, Kansas.

Peabody Opera House: The Peabody Opera House (formerly known as the Kiel Opera House) is a civic performing arts building located in St. Louis, Missouri.  Founded as the Kiel Opera House, it opened in 1934 and operated until 1991, when it and the adjacent Kiel Auditorium were closed so the auditorium could be demolished and replaced by the Scottrade Center.  When the auditorium was slated for demolition, the owners of the complex promised to rehabilitate the opera house as well.  The owners, however, never renovated the building, instead claiming that they had fulfilled their financial obligations.  In June 2009, the St. Louis Board of Aldermen voted 25–1 to subsidize the renovation and reopening of the Opera House under the direction of its new owners, Sports Capital Partners.  The subsidies were funded by municipal bonds and state/federal historic tax credits.  On July 12, 2010, it was announced that the name of the opera house would be changed to the Peabody Opera House, named after the company Peabody Energy.  The renovation lasted for fourteen months and included the construction of a new entrance for the building.

Royal Opera House (Mumbai): Royal Opera House, also known as Opera House in Mumbai (formerly Bombay), is India's only surviving opera house.  Situated on Charni Road, near Girgaum Chowpatti beach, the adjective ‘Royal’ was prefixed to ‘Opera House’ to reflect the fact that its foundation stone was laid during the British Raj in 1909, and King George V inaugurated the building in 1911 while the building was still under construction.  Work on the Royal Opera House was completed in 1912, although additions were made to the building up to 1915.  After years of neglect following its closure in 1993, restoration work started in 2008.  The exterior restoration was completed in 2011 and restoration was completed in 2016.  The area around the theatre is also referred to as the Opera House in Mumbai.The Opera House area has many jewellery, metal and IT companies.  On 21 October 2016, after a gap of 23 years, Royal Opera House hosted performance of Bombay-born British soprano Patricia Rozario and her husband, pianist Mark Troop.  The private event was organised by Opera House owners Maharaja Joytendrasinhji Jadeja and Maharani Kumud Kumari Jadeja of Gondal, Gujarat.

McPherson, Kansas: McPherson ( ) is a city in and the county seat of McPherson County, Kansas, United States, in the central part of the state.  As of the 2010 census, the city population was 13,155.  The city is named after Union General James Birdseye McPherson, a Civil War general.  It is home to McPherson College and Central Christian College.

Shanghai Opera House: Shanghai Opera House (; Shanghainese: Zånhae Gujihyu) is the official government-funded western-style opera company of Shanghai, China, and the resident opera company at the new Shanghai Grand Theatre (上海大剧院 "Shanghai Da Juyuan").  Although the term "Opera House" is often applied to the building, both in English and Chinese texts, officially the building is not an opera house and the term "Shanghai Opera House" properly applies only to the performing company, not the building, as is also true for its senior sister company, the China National Opera House (CNOH) in Beijing.  The reason for the distinction is found in that the Chinese character "Yuan" (院) applies primarily to a school or institute or dramatic troupe rather than the building in which a school, institute or dramatic company resides.

Pella Opera House: The Pella Opera House is a historic building located in Pella, Iowa, United States.  Herman Rietveld, a local businessman and promoter, was the main backer for building the opera house, which was underwritten by the Pella Opera House Association.  A previous opera house had been destroyed in a fire in the late 19th century.  Pella architect Henry DeGooyer designed the four story, brick Romanesque Revival structure.  He used the opera house in Sioux City, Iowa, as his guide.  The locally produced orange-colored bricks are said to be distinctive to Pella.

Tecumseh Opera House: The Tecumseh Opera House, located at 123 S. Third in Tecumseh, Nebraska, is a historic building built in 1880.  It is a two-part commercial block building, and has also been known as Seaver Bros.  Opera House, as Smith Theatre, as Hahn Opera House, as Spicknall & Goodman Opera House, as Goodman & Canfield Opera House, and as Villars Hall, and it has been denoted NeHBS #J007-53 and OHBIN #ll-29-OI.

Supporting paragraphs: McPherson Opera House McPherson, Kansas
Answer: 13,155