Q:Information: - Kelvin "Kel" Carruthers (born 3 January 1938) is an Australian former world champion Grand Prix motorcycle road racer. He went on to become a successful race team manager, particularly in the US and Europe with Kenny Roberts. - Brian Steenson was a former Grand Prix motorcycle road racer . His best season was in 1968 when he finished the year in ninth place in the 350cc world championship . In 1969 , Steenson finished second to Giacomo Agostini in the Isle of Man Junior TT . He was killed while competing in the 1970 Isle of Man TT . - A motor vehicle is a self-propelled road vehicle and off-road vehicle, commonly wheeled, that does not operate on rails, such as trains or trams and used for commercial purposes on the highways in the transportation of passengers, or passengers and property. - The 1970 Isle of Man TT, the fourth round of the 1970 Grand Prix motorcycle racing season, involved a number of races on the Mountain Course on the Isle of Man. For the third consecutive year, Giacomo Agostini won both the Junior and Senior races, completing the six laps of the latter race in 2:13.47.6 to win by over five minutes. There were three "production" categories; Malcolm Uphill won the 750 cc, Frank Whiteway the 500 cc and Chas Mortimer the 250 cc. German pairs won both sidecar events; Klaus Enders and Wolfgang Kalauch in the 500 cc and Siegfried Schauzu and H. Schneider in the 750 cc. Kel Carruthers won the Lightweight 250 cc race, while Dieter Braun won the Lightweight 125 cc. Braun's victory was notable because he was one of only seven riders to have won an Isle of Man TT race in their first attempt. Due to the circuit's 37.7 mile length, it usually takes competitors two or three attempts before they learn its nuances. - Malcolm Ernest Uphill, (15 April 1935 1 January 1999) was a Welsh professional motorcycle racer. He competed in British national-level short-circuit and in Grand Prix motorcycle racing. Uphill was the first competitor on a production bike to average 100 mph in the Isle of Man Tourist Trophy races. - The Isle of Man, also known simply as Mann, is a self-governing crown dependency in the Irish Sea between England and Northern Ireland. The head of state is Queen Elizabeth II, who holds the title of Lord of Mann. The Lord of Mann is represented by a Lieutenant Governor. Foreign relations and defence are the responsibility of the British Government. - The International Isle of Man TT (Tourist Trophy) Race is a motorcycle sport event held annually on the Isle of Man in May or June of each year since the inaugural race in 1907. The Isle of Man TT for many years was the most prestigious motorcycle race in the world and also seen as the ultimate test for competitors and machines alike. The Isle of Man TT has been administered by the Auto-Cycle Union (ACU) (previously the Auto-Cycle Club) since 1907 and the Isle of Man TT race organisation is currently managed since 2008 by ACU Events Ltd, a fully owned subsidiary of the ACU. In 2016 the Vision Nine Group was appointed by the Isle of Man Department of Economic Development in a ten-year deal as a race promoter for the 2017 Isle of Man TT onwards. In a profit-sharing arrangement with the private promoter, the Vision Nine Group will invest 2.5 Million in the event and the promoter replacing the previous Isle of Man Department of Economic Development staff and race organisation. - A motorcycle (also called a motorbike, bike, or cycle) is a two- or three-wheeled motor vehicle. Motorcycle design varies greatly to suit a range of different purposes: long distance travel, commuting, cruising, sport including racing, and off-road riding. Motorcycling is riding a motorcycle and related social activity such as joining a motorcycle club and attending motorcycle rallies. - The Junior TT is a motorcycle road race that takes place during the Isle of Man TT festival; an annual event at the end of May and beginning of June. Between 1949 and 1976 this race was part of the Grand Prix motorcycle racing season. After reading the paragraphs above, we are interested in knowing the entity with which 'brian steenson' exhibits the relationship of 'occupation'. Find the answer from the choices below. Choices: - commercial - governor - head of state - lieutenant - manager - motorcycle racer - motorcycle sport - mountain - promoter - travel
A:
motorcycle racer