Question: Which of the former British Leyland companies is best know for it's two-seat open sports cars?

Passages:
The Rover Group plc was the name given in 1986 to the British vehicle manufacturer BL (formerly British Leyland), which had been state-owned company since 1975.  It initially included the Austin Rover Group car business (comprising the Austin, Rover, Mini and MG marques), Land Rover Group, Freight Rover vans and Leyland Trucks. Leyland Motors Limited was a British vehicle manufacturer of lorries, buses and trolleybuses.  The company diversified into car manufacturing with its acquisitions of Triumph and Rover in 1960 and 1967, respectively.  It gave its name to the British Leyland Motor Corporation, formed when it merged with British Motor Holdings in 1968, to become British Leyland after being nationalised.  British Leyland later changed its name to simply BL, then in 1986 to Rover Group. MG, the initials of Morris Garages, is an English automotive marque registered by the now defunct MG Car Company Limited, a British sports car manufacturer begun in the 1920s as a sales promotion sideline within W R Morris's Oxford city retail sales and service business by the business's manager, Cecil Kimber.  Best known for its two-seat open sports cars, MG also produced saloons and coupés. Kimber was an employee of William Morris. British Leyland was an automotive engineering and manufacturing conglomerate formed in the United Kingdom in 1968 as British Leyland Motor Corporation Ltd (BLMC), following the merger of Leyland Motors and British Motor Holdings.  It was partly nationalised in 1975, when the UK government created a holding company called British Leyland, later BL, in 1978.  It incorporated much of the British-owned motor vehicle industry, which constituted 40 percent of the UK car market, with roots going back to 1895. Land Rover Group (LRG) was a division of British Leyland (BL) and later the Rover Group that was in existence between 1981 and 1987.  LRG brought British Leyland's light commercial vehicle production under one management, consisting of the Land Rover utility 4x4 range, the Range Rover luxury 4x4 and the former Leyland Sherpa van range (re-branded Freight Rover to match the other group members in 1984).  LRG operated two factories in the Birmingham area- the Solihull plant and the Freight Rover plant at Washwood Heath. The Austin Rover Group (abbreviated ARG) was a British motor manufacturer.  It was created in 1982 as the mass-market car manufacturing subsidiary of British Leyland (BL).  Previously, this entity had been known as BL Cars Ltd (formerly Leyland Cars) which encompassed the "Austin-Morris" and "Jaguar-Rover-Triumph" divisions of British Leyland.  After a major restructuring of BL's car manufacturing operations, Jaguar regained its independence (leading to its eventual de-mergeri in 1984) whilst the Triumph and Morris marques were retired.  The new, leaner car business was rechristened as the Austin Rover Group and focused primarily on the Austin and Rover marques.  The Morris and Triumph marques continued briefly within ARG until 1984 when both were dropped. The Leyland National is an integrally-constructed British step-floor single-decker bus manufactured in large quantities between 1972 and 1985.  It was developed as a joint project between two UK nationalised industries – the National Bus Company and British Leyland.  Buses were constructed at a specially built factory at the Lillyhall Industrial Estate, Workington.  Styling was carried out by the famed Italian vehicle stylist Giovanni Michelotti, well known to British Leyland, having worked for both Triumph (Herald, TR4, GT6, 2000/2500, 1300, Dolomite and Stag) and Scammell lorries (Routeman GRP cab). was a British motorcar and bicycle manufacturer from 1890.  Riley became part of the Nuffield Organisation in 1938 and was merged into the British Leyland Motor Corporation in 1968.  ln July 1969 British Leyland announced the immediate end of Riley production, although 1969 was a difficult year for the UK auto industry and cars from Riley's inventory may have been first registered in 1970. Nuffield Press is a former part of the UK's automotive manufacturer Nuffield Organisation / BMC, then effectively becoming part of British Leyland in 1968.  At its peak the Nuffield Press used more than 1,000 tons of paper a year producing sales literature, owners manuals, technical manuals, magazines, diaries and posters.  Originally it produced technical publications for BMC, and later the wider remit of British Leyland's entire product range (as well as its successor companies Austin Rover Group and Rover Group), but also for external clients. Giovanni Michelotti (6 October 1921 – 23 January 1980) was one of the most prolific designers of sports cars in the 20th century.  His notable contributions were for Ferrari, Lancia, Maserati and Triumph marques.  He was also associated with truck designs for Leyland Motors, and with designs for British Leyland (including the Leyland National bus) after the merger of Leyland and BMC.

Supporting sentences:
The Rover Group plc was the name given in 1986 to the British vehicle manufacturer BL (formerly British Leyland), which had been state-owned company since 1975.  It initially included the Austin Rover Group car business (comprising the Austin, Rover, Mini and MG marques), Land Rover Group, Freight Rover vans and Leyland Trucks. MG, the initials of Morris Garages, is an English automotive marque registered by the now defunct MG Car Company Limited, a British sports car manufacturer begun in the 1920s as a sales promotion sideline within W R Morris's Oxford city retail sales and service business by the business's manager, Cecil Kimber.  Best known for its two-seat open sports cars, MG also produced saloons and coupés. Kimber was an employee of William Morris.