Question: Information:  - The Sidecar TT is a motorcycle-with-sidecar road race competition held over two legs which takes place during the Isle of Man TT festival, an annual event at the end of May and beginning of June. Between 1954 and 1976 this race was part of the Grand Prix motorcycle racing world championship.  - The FIM Road Racing World Championship Grand Prix is the premier class of motorcycle road racing, held since 1949.  - Stockton-on-Tees is a market town in the ceremonial county of County Durham, North East England. It is the major settlement in the borough of Stockton-on-Tees. The town sits within the Tees Valley region of the North East of England, and the wider borough had a population of 191,000 in 2011 estimates.  - The 1923 Isle of Man Tourist Trophy saw the introduction of the first Sidecar TT race over 3 laps , won by Freddie Dixon and passenger Walter Denney using a special Douglas motorcycle with a banking - sidecar in a time of 2 hours , 7 minutes and 48 seconds , at an average speed of 53.15 mph ( 85.54 km / h ) . The fastest Sidecar lap was by Harry Langman on a Scott at 54.69 mph ( 88.02 km / h ) . The Senior race was held in poor weather and local course knowledge allowed local Isle of Man competitor Tom Sheard , also riding a Douglas , to win a second TT to add to his first win in the 1922 Junior TT . Another first - time winner was Stanley Woods , riding to his first of ten victories in the TT races , on a Cotton in the Junior TT . TT novice Jimmie Guthrie suffered a machine breakdown in the Junior 350 cc race , but he achieved six victories in later years . Changes to the course occurred in 1923 with the adoption of a private road between Parliament Square and May Hill in Ramsey . Previously the course negotiated Albert Road and Tower Road in Ramsey and the new course length was 37.739 miles ( revised to 37.733 miles ( 60.725 km ) in 1938 ) .  - A sidecar is a one-wheeled device attached to the side of a motorcycle, scooter, or bicycle, producing a three-wheeled vehicle. A motorcycle with a sidecar is sometimes called a "combination", an "outfit", a "rig" or a "hack".  - 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.  - Frederick William Dixon (21 April 1892  4 November 1956 ) was an English motorcycle racer and racing car driver. The designer of the motorcycle and banking sidecar system, he was also one of the few motorsport competitors to have been successful on two, three and four wheels. He was twice awarded the BRDC Gold Star for car racing. Dixon, who had the nickname "Flying Freddie", was born at Stockton-on-Tees, County Durham, England, one of eight children of John and Martha Dixon (née Agar).  - 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.  - County Durham (locally ), occasionally Durhamshire, is a county in North East England. The county town is Durham, a cathedral city, whilst the largest settlement is Darlington. It borders Tyne and Wear to the north east, Northumberland to the north, Cumbria to the west and North Yorkshire to the south. Historically, the county included southern Tyne and Wear, including Gateshead and Sunderland.    What object entity has the relation of 'instance of' with the subject '1923 isle of man tt'?   Choices: - activity  - april  - bicycle  - borough  - championship  - city  - class  - competition  - county  - cycle  - department  - device  - england  - festival  - four  - grand prix motorcycle racing  - isle of man tt  - june  - market  - market town  - may  - motorcycle  - part  - population  - promoter  - race  - racing  - racing car  - road  - scooter  - side  - suit  - system  - ten  - test  - three  - town  - trophy  - two  - valley  - vision  - will  - world championship  - year
Answer:
isle of man tt