Question: New Cathedral Street has the largest store that is located outside London that is a part of what stock index?

Context paragraphs:
PSI-20: The PSI-20 (an acronym of Portuguese Stock Index) is a benchmark stock market index of companies that trade on Euronext Lisbon, the main stock exchange of Portugal.  The index tracks the prices of the twenty listings with the largest market capitalisation and share turnover in the PSI Geral, the general stock market of the Lisbon exchange.  It is one of the main national indices of the pan-European stock exchange group Euronext alongside Brussels' BEL20, Paris's CAC 40 and Amsterdam's AEX.

Enoch Pratt Free Library: The Enoch Pratt Free Library is the free public library system of the City of Baltimore, Maryland.  Its Central Library is located at 400 Cathedral Street and occupies the northeastern three-quarters of a city block bounded by West Franklin Street to the north, Cathedral Street to the east, West Mulberry Street to the south and Park Avenue to the west.  Located on historic Cathedral Hill, north of the downtown business district, the library is also in the Mount Vernon-Belvedere-Mount Royal neighborhood and cultural/historic district.  The Cathedral Street Main Library is the flagship of the entire Enoch Pratt Free Library system, now with twenty-two community and regional branches, it was designated the "Maryland State Library Resource Center" by the General Assembly of Maryland in 1971.

Franklin Street Presbyterian Church and Parsonage: Franklin Street Presbyterian Church and Parsonage is a historic Presbyterian church located at 100 West Franklin Street at Cathedral Street, northwest corner in Baltimore, Maryland, United States.  The church is a rectangular Tudor Gothic building dedicated in 1847, with an addition in 1865.  The front features two 60 foot flanking octagonal towers are also crenelated and have louvered belfry openings and stained glass Gothic-arched windows.  The parsonage has walls of brick, heavy Tudor-Gothic window hoods, and battlements atop the roof and was built in 1857.  This church was incorporated in 1844 by a group of men from the First Presbyterian Church then located at the northwest corner of East Fayette Street and North Street (now Guilford Avenue) in downtown (later relocated in 1854 to West Madison Street and Park Avenue in Mount Vernon-Belvedere neighborhood after selling their previous third church building of 1790-95 to the Federal Government which built a U.S. Courthouse there [to 1889, replaced again 1932] dedicated in 1860 by President James Buchanan).  They felt the need for a new church in that fast-growing northern section of the city formerly "Howard's Woods" of Col. John Eager Howard's (Revolutionary War commander of the famed "Maryland Line" regiment of the Continental Army) country estate "Belvedere" (mansion located at intersection of North Calvert and East Chase Streets, razed 1875) where the Washington Monument was erected with its four surrounding park squares just two blocks from their new building.  Franklin Street Church was also located on "Cathedral Hill" in the southern part of the community bordering downtown and across the street from the old Baltimore Cathedral (Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary) erected 1806-1821 and designed by Benjamin Latrobe.  Later in 1882-1886, philanthropist Enoch Pratt founded his central library for the new Enoch Pratt Free Library then facing West Mulberry Street at Cathedral, a block south which was replaced in 1931-33 by a new central library building encompassing the entire block and now directly across Franklin Street from the F.S.P.C.  In 1973, the two historic congregations reunited to form The First and Franklin Street Presbyterian Church and was centered at the First Church site on West Madison and Park.  The Franklin Street building was used by the merged congregation for a time and then sold to a fundamentalist independent Protestant congregation and later re-sold to the present "New Unity Church Ministries".  Across Cathedral Street to the northeast was the 1820s era Greek Revival home designed by Robert Mills (who also did the Washington Monument two blocks away) which later was occupied by the original Maryland Club, an exclusive Southern-leaning dining and leisure society of gentlemen, founded 1857 that was once threatened by Massachusetts Militia Gen. Benjamin F. Butler, U.S.A. when he occupied Baltimore at the beginning of the Civil War on May 13, 1861, and fortified Federal Hill with a Fort and cannons overlooking the harbor and city, "to put a shot into it" if he spied a reputed rebel flag flying or any discontent to declared martial law.  The Club later moved to North Charles and East Eager Streets in 1892 and mansion was later replaced by the former Central Building of the Young Men's Christian Association of Central Maryland (YMCA) which was closed in the 1980s and the building renovated as the Mount Vernon Hotel and Cafe.

MASI index: The MASI index ("Moroccan All Shares Index") is a stock index that tracks the performance of all companies listed in the Casablanca Stock Exchange located at Casablanca, Morocco.  It is one of two main indices at the bourse, the other being the MADEX (Moroccan Most Active Shares Index).

Market Street, Manchester: Market Street is one of the principal retail streets in Manchester, England.  It runs from its junction with Piccadilly and Mosley Street, close to Piccadilly Gardens, in the east to where it meets St. Mary's Gate at the crossroads with Exchange Street and New Cathedral Street in the west.  St Mary's Gate then continues to where it meets Deansgate (A56).  Other major streets crossed are High Street, Corporation Street (on the north side), Cross Street and Fountain Street (on the south side).

DAX: The DAX ("Deutscher Aktienindex" (German stock index)) is a blue chip stock market index consisting of the 30 major German companies trading on the Frankfurt Stock Exchange.  Prices are taken from the Xetra trading venue.  According to Deutsche Börse, the operator of Xetra, DAX measures the performance of the Prime Standard’s 30 largest German companies in terms of order book volume and market capitalization.  It is the equivalent of the FT 30 and the Dow Jones Industrial Average, and because of its small selection it does not necessarily represent the vitality of the economy as whole.

Hwange Colliery: Hwange Colliery is the name of a company in Zimbabwe and of its associated coal mine.  It was founded in 1899.  Mining operations are located near Hwange in the province of Matabeleland North.  The company's headquarters are in the capital, Harare, some 500 kilometers to the east of the actual colliery.  Its stock is listed on the Zimbabwe Stock Exchange and is a component of its stock index, the Zimbabwe Mining Index.  It is also listed on the London Stock Exchange and Johannesburg Stock Exchange.

Ted Baker: Ted Baker plc is a British luxury clothing retail company.  It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.

Khartoum Stock Exchange: The Khartoum Stock Exchange is the principal stock exchange of Sudan.  It is located in Khartoum and its name is abbreviated to KSE.  The principal stock index of the KSE is the Khartoum Index.

New Cathedral Street: New Cathedral Street is a pedestrianised retail street in Manchester city centre, England.  It runs between Exchange Square and Exchange Street (off St Mary's Gate, Manchester).  The street is home to the Manchester branch of Marks and Spencer and Selfridges (east side), and Harvey Nichols, the largest Ted Baker and Hugo Boss stores outside London, Lacoste, Louis Vuitton, Reiss, Henri Lloyd, Massimo, Zara and Burberry (west side).

Supporting paragraphs: New Cathedral Street Ted Baker
Answer: FTSE 250