Question: Two of London's 33 districts are cities: the City of London (the historic centre including Smithfield and Holborn) and which other?
Context: Karimganj (Bengali: করিমগঞ্জ, Assamese: কৰিমগঞ্জ, Sylheti: ꠇꠞꠤꠝꠉꠘ꠆ꠎ) is one of the 33 districts of Assam state, India.  The administrative headquarters of this district, Karimganj city is the biggest city in this district.  It is located in southern Assam and borders Tripura and Sylhet district of Bangladesh.  It was a part of Sylhet district of Assam before partition of India and remained in India while the rest of Sylhet district joined Pakistan and karimgonj was occupied by India although it voted to join Pakistan in referendum .  It became a district in 1983. The districts of England (also known as local authority districts or local government districts to distinguish from unofficial city districts) are a level of subnational division of England used for the purposes of local government.  As the structure of local government in England is not uniform, there are currently four principal types of district-level subdivision.  There are a total of 326 districts made up of 36 metropolitan boroughs, 32 London boroughs, 201 non-metropolitan districts, 55 unitary authorities, as well as the City of London and the Isles of Scilly which are also districts, but do not correspond to any of these categories.  Some districts are styled as boroughs, cities, or royal boroughs; these are purely honorific titles, and do not alter the status of the district.  All boroughs and cities, and a few districts, are led by a mayor who in most cases is a ceremonial figure elected by the district council, but – after local government reform – is occasionally a directly elected mayor who makes most of the policy decisions instead of the council. Holborn Circus is a junction of five highways in the City of London, on the boundary between Holborn, Hatton Garden and Smithfield.  It was designed by the engineer William Haywood and opened in 1867.  The term "circus" describes the way the frontages of the buildings surrounding the junction curve round in a concave chamfer. Sirohi is a city in southern Rajasthan state in western India.  It is the administrative headquarters of Sirohi District and was formerly the capital of the princely state of Sirohi ruled by Deora Chauhan Rajput.  It has five Tehsils (Administrative Divisions): Abu Road, Sheoganj, Reodar, Pindwara, and Sirohi itself.  It is also known as Devnagari.  The nearest railway station to Sirohi is Sirohi Road. Sirohi got first rank in 33 districts of Rajasthan for "Swach bharat Abhiyan " in year 2014. Jhalawar district is one of the 33 districts of Rajasthan state in western India.  The district is bounded on the northwest by Kota district, on the northeast by Baran district, on the east by Guna district of Madhya Pradesh state, on the south by Rajgarh and Shajapur districts of Madhya Pradesh state and on the west by Ratlam, Mandsaur and Nimach districts of Madhya Pradesh state.  The district occupies an area of 6928 km².  The district is part of Kota division.  The historical city of Jhalawar is the administrative headquarters of the district. El Callao ( ; ] or ] ) is the chief seaport of Peru.  The city is also called Provincia Constitucional (Constitutional Province), the only province of the Callao Region.  The Historic Centre of Callao is located 15 km west of Historic Centre of Lima, the country's capital, and is part of the Lima Metropolitan Area.  Callao borders Lima Province on the north, east and south, and the Pacific Ocean on the west. Giltspur Street is a street in Smithfield in the City of London, running north-south from the junction of Newgate Street, Holborn Viaduct and Old Bailey, up to West Smithfield, and it is bounded to the east by St Bartholomew's Hospital.  It was formerly known as Knightsriders Street, from the knights riding at the tournaments in Smithfield. Udaipur District is one of the 33 districts of Rajasthan state in western India.  The historic city of Udaipur is the administrative headquarters of the district.  Udaipur is one of the 7 divisions in Rajasthan. The City of London is a city and county that contains the historic centre and central business district of London.  It constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the agglomeration has since grown far beyond the City's borders.  The City is now only a tiny part of the metropolis of London, though it remains a notable part of central London.  Administratively, it forms one of the 33 local authority districts of Greater London; however, the City of London is not a London borough, a status reserved for the other 32 districts (including London's only other city, the City of Westminster). The parliamentary borough of Finsbury was a constituency of the House of Commons of the UK Parliament from 1832 to 1885, and from 1918 to 1950.  The constituency was first created in 1832 as one of seven two-seat "metropolis" parliamentary boroughs (five in southeast Middlesex and two in northeast Surrey) other than the two which already existed: Westminster and the City of London; the latter until 1885 retained an exceptional four seats.  Finsbury was directly north of the City of London and was smaller than the Finsbury division of the Ossulstone hundred but took in land of Holborn division (hundred division) to its southwest in pre-introduction changes by Boundary Commissioners.  It included Finsbury, Holborn, Moorfields, Clerkenwell, Islington, Stoke Newington and historic St Pancras (later mainly known as Camden Town).  The 1918 constituency corresponded to the smaller Metropolitan Borough of Finsbury (Finsbury, Moorfields, Clerkenwell, and St Luke's, Islington); it was a seat, thus electing a single member, fulfilling a longstanding aim of Chartism which underscored the 1832 reforms.
Answer: City of Westminster