[Q]: Information:  - Formula 3000 was a type of open wheel, single seater formula racing, occupying the tier immediately below Formula One and above Formula Three. It was so named because the cars were powered by 3000 cc engines.  - The 1953 French Grand Prix was a Formula Two race held on 5 July 1953 at Reims . It was the fifth round of the 1953 World Drivers ' Championship , which was run to Formula Two rules in 1952 and 1953 , rather than the Formula One regulations normally used . Not only had the Reims circuit 's layout changed , the name was different -- both in regard to the same thing . The new , faster and slightly longer circuit bypassed the town of Gueux and as a result , the circuit was now called `` Reims '' . It is popularly known as the race of the century because of the sixty lap battle between Briton Mike Hawthorn and Argentine Juan Manuel Fangio . Hawthorn won the duel after they reportedly swapped the lead at virtually every corner on the Reims circuit . In addition , after 500 km of racing , the four lead cars were less than 5 seconds apart .  - Formula racing is any of several forms of open-wheeled single-seater motorsport. The origin of the term lies in the nomenclature that was adopted by the FIA for all of its post-World War II single-seater regulations, or formulae. The best known of these formulae are Formula One, Two, Three and Four. Common usage of "formula racing" encompasses other single-seater series, including the GP2 Series, which replaced Formula 3000 (which had itself been the effective replacement for Formula Two).  - Formula Two, abbreviated to F2, was a type of open wheel formula racing first codified in 1948. It was replaced in 1985 by Formula 3000, but revived by the FIA from 20092012 in the form of the FIA Formula Two Championship.  - The FIA Formula Two Championship was a one-make class of auto racing for Formula Two open wheeled single seater racing cars. It was a revival of the former European Formula Two Championship that was previously run from 1967 to 1984, and was organised by MotorSport Vision. Drivers competed in identical Williams F1 built cars with an Audi supplied and Mountune Racing developed 400 bhp engine, over 16 rounds at eight venues.    Given the information, choose the subject and object entities that have the relation of 'sport'.
****
[A]: 1953 french grand prix , auto racing


Problem: Information:  - A hobby is a regular activity that is done for enjoyment, typically during one's leisure time. Hobbies can include collecting themed items and objects, engaging in creative and artistic pursuits, playing sports, or pursuing other amusements. A list of hobbies is lengthy and always changing as interests and fashions change. By continually participating in a particular hobby, one can acquire substantial skill and knowledge in that area. Engagement in hobbies has increased since the late nineteenth century as workers have more leisure time and advancing production and technology have provided more support for leisure activities. As some hobbies have become less popular, like stamp collecting, others have been created following technological advances, like video games.  - Model building as a hobby involves the creation of models either from kits or from materials and components acquired by the builder . Categories of modelling include : Scale model building Live steam models Matchstick models Military models Model aircraft Model cars Model commercial vehicles Model construction vehicles Building models Architectural models Model figures Model military vehicles Rail transport modelling Model rockets Model ships Freelance model Cardboard engineering Firearm models ( See Airsoft guns ) Gundam Models  - The hobby of collecting includes seeking, locating, acquiring, organizing, cataloging, displaying, storing, and maintaining whatever items are of interest to the individual collector. The scope of collecting is unlimited: "If something exists, somebody somewhere collects them."  - Leisure has been defined as a quality of experience or as free time.  - A video game is an electronic game that involves human or animal interaction with a user interface to generate visual feedback on a video device such as a TV screen or computer monitor. The word "video" in "video game" traditionally referred to a raster display device, but as of the 2000s, it implies any type of display device that can produce two- or three-dimensional images. Some theorists categorize video games as an art form, but this designation is controversial.  - Stamp collecting is the collecting of postage stamps and related objects. It is related to philately which is the study of stamps. It has been one of the world's most popular hobbies since the late nineteenth century with the rapid growth of the postal service, but is now in decline with the rise of the internet which has sharply reduced the number of postal items arriving in households. Stamp collecting proved to be an almost perfect hobby for collectors because there was a never ending stream of new stamps as each country sought to advertise its distinctiveness through its stamps. Because some stamps became rare, a thriving international trade in stamps was created. While stamp collectors are of all ages, it has been particularly popular hobby among children, many of whom continued the hobby as adults.    Given the information, choose the subject and object entities that have the relation of 'subclass of'.

A:
model building , activity