Question: How long does the fall festival at the place formerly known as MOSI last?
Context: TomorrowWorld is an electronic music festival, held in Chattahoochee Hills, Georgia.  The festival is owned by LiveStyle, Inc. (formerly known as SFX Entertainment, Inc.) and organized and produced by EDM promoter ID&T, a wholly owned subsidiary of LiveStyle.  It was started in 2013 and formerly took place in the town of Chattahoochee Hills, Georgia, 25 miles southwest of Atlanta.  In its inaugural year, TomorrowWorld received a nomination for Best Music Event at the International Dance Music Awards.  The last TomorrowWorld festival held in the Chattahoochee Hills was in September 2015.  The festival did not return in 2016 due to the bankruptcy of SFX and the backlash TomorrowWorld received from mishaps in 2015. Newman is a city in Stanislaus County, California, United States.  The population was 10,224 at the 2010 census, up from 7,093 at the 2000 census.  It is part of the Modesto Metropolitan Statistical Area.  Founded by Simon Newman in 1888, the City of Newman is part of the West Side of California's central valley.  Known for its annual Fall Festival and small town charm, the City of Newman retains its rural flavor while keeping up with larger more-urbanized communities.  The city is under a mandate from the county’s Local Agency Formation Commission to adopt an agricultural land preservation strategy.  The city could approve an urban growth limit policy that would establish the sphere of influence boundary lasting for 25 years. Manchester Science Festival is an annual science festival held in October in Manchester, England, and produced by the Museum of Science and Industry.  It runs for eleven days, incorporating over 100 events across Greater Manchester for families and adults.  Siemens has been the Festival’s headline sponsor since 2014, as part of its Curiosity Project. The Central Park Bandstand, also known as the Music Pavilion, is a historic bandshell located within Central Park in Orion, Illinois.  The bandstand was built in 1913 following a series of successful outdoor concerts in the park.  Local engineer J.C. Ericson built the structure in the then-recently popularized bandshell form, which projected sound toward the audience through its rear wall.  The bandstand was completed in three weeks; its opening concert hosted the largest crowd that the park had ever held until that time.  From its inception until 1925, the bandstand continued to host concerts, usually once per week; movie screenings and church services were also held at the bandstand.  Beginning in 1947, the bandstand became an event stage for the Midwest Corn Show, which later became the Orion Fall Festival; the structure is now mainly used during the festival. The Great Locomotive Chase Festival is a three-day celebration held in remembering the Great Locomotive Chase of April 12, 1862.  It is held the first weekend each October in the center of downtown Adairsville, GA.  The festival has arts and crafts booths, historical exhibits, concerts, entertainment, carnival rides, and over 40 food booths.  The Grand Parade and multiple pageants are held on Friday and Saturday, as well as street dances.  Gospel singing takes place on Sunday afternoon.  The festival was founded by the towns Principle Marion Lacey.  The schools fall festival had been canceled due to funding issues.  Mr. Lacey planned the festival in town to get the small businesses together and provide entertainment for the students each fall. Opera Omaha is a major regional opera company in Omaha, Nebraska.  Begun in 1958, the professional company is widely known for the International Fall Festival events it held in the 1980s and 1990s, which garnered international attention and served as the U.S. and world premieres for a number of notable works.  One of these performances, the 1990 U.S. premiere of the 1841 work Maria Padilla, was among the primary debuts for noted soprano Renee Fleming.  "I’ve been calling all my singer friends and saying, 'You’ve got to sing for this company.'"  Fleming said at the time.  It has "a lot of vision."  In 2007, the Toronto Star said "Opera Omaha has grown into one of the continent's most enterprising regional opera companies." AgapeFest, formerly known as Agape Music Festival, was an annual, Christian music festival in Greenville, Illinois.  It featured many Christian musicians and some of today's top Christian bands.  The festival was sponsored by nearby Greenville College and had been student-run since its inception in 1977.  AgapeFest was generally held the last weekend in April or first weekend in May, and bands performed from early afternoon Friday until late evening on Saturday.  They offered free camping and free parking to attendees.  Unfortunately, the festival culminated after 2013's event.  Greenville College was unable provide funding for AgapeFest in 2014, and that year's planned festival was not hosted.  AgapeFest has not been hosted since and currently has no plans to return as a two-day festival.  However, Greenville College hosted Encore Music festival in its place in 2014 and currently brings events such as Propaganda (musician), Noah Gundersen, and the Nashville Contemporary Music Center's Holotour to campus. The Parke County Covered Bridge Festival is a fall festival which takes place in nine communities in Parke County, Indiana, United States.  It celebrates the county's 31 covered bridges, and is attended by more than 2 million people each year.  It begins on the 2nd Friday in October and lasts 10 days. The Harrison Courthouse Square Historic District is an area of Harrison, Arkansas.  It is known by residents simply as "the Square".  The Harrison Courthouse Square Historic District includes the 1911 Boone County Courthouse, two pharmacies, several clothing stores and restaurants, and a Marine Corps museum.  The District also has a bank and the Lyric Theater.  The District is the site of several annual festivals, including Crawdad Days and the Fall Festival.  Several war memorials stand on the Courthouse lawn.  The Square is known as the site of the shooting of famous outlaw Henry Starr. The Museum of Science and Industry (MSI or formerly known as MOSI) in Manchester, England, is a large museum devoted to the development of science, technology and industry with emphasis on the city's achievements in these fields.  The museum is part of the Science Museum Group, a non-departmental public body of the Department for Culture, Media and Sport, having merged with the National Science Museum in 2012.
Answer: eleven days