Information: - HD 122430 is an orange giant star about 440 light years away in the constellation of Hydra on the celestial sphere. The star has completely run out of the hydrogen fuel that keeps it stable, although its age is only 3.1 billion years old, younger than the Suns 4.6 billion years. HD 122430 has a mass of 1.4 times and radius of 22.9 times that of the Sun. Despite its younger age, it has slightly lower metallicity, approximately 90%. The temperature of its surface (photosphere) is approximately 4300 kelvins. - Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, after Mercury. Named after the Roman god of war, it is often referred to as the "Red Planet" because the iron oxide prevalent on its surface gives it a reddish appearance. Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth. - An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Although Meteor Crater is perhaps the best-known example of a small impact crater on Earth, impact craters range from small, simple, bowl-shaped depressions to large, complex, multi-ringed impact basins. - HD 122430 b is a giant planet orbiting around the giant star HD 122430 . It has a mass at least 3.71 times that of Jupiter . This planet located at a distance of 1.02 astronomical units away from its star , which is very similar to the Earth 's distance from the Sun. Despite of this , the higher luminosity of the star implies it is heated much more strongly than the Earth is . Its orbit is highly eccentric , around 68 % . At periastron , the orbital distance from its parent star is 0.33 AU . At apastron , the distance is 1.71 AU . If this planet were in the Solar System , its orbit would range from just within Mercury 's orbit to just beyond Mars 's orbit . In Spain , Setiawan discovered this planet in 2003 , using the radial velocity method . After reading the paragraphs above, choose the best answer for the entity that related to 'hd 122430 b' with the relationship of 'constellation'. Choices: - crater - hydra
hydra

Ques: Information: - On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle (wheelset) located behind the driving wheels. The axle of the trailing wheels is usually located in a trailing truck. On some large locomotives, a booster engine was mounted on the trailing truck to provide extra tractive effort when starting a heavy train and at low speeds on gradients. - Frederick Methvan Whyte (March 2, 1865 1941) was a mechanical engineer of Dutch background who worked for the New York Central in the United States. He is most widely known as the person who developed Whyte notation to describe the different wheel arrangements of steam locomotives in 1900. - The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in "American Engineer and Railroad Journal". The notation counts the number of leading wheels, then the number of driving wheels, and finally the number of trailing wheels, groups of numbers being separated by dashes. Other classification schemes, like UIC classification and the French, Turkish and Swiss systems for steam locomotives, count axles rather than wheels. - On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons (or turbine, in the case of a steam turbine locomotive). On a conventional, non-articulated locomotive, the driving wheels are all coupled together with side rods (also known as coupling rods); normally one pair is directly driven by the main rod (or connecting rod) which is connected to the end of the piston rod; power is transmitted to the others through the side rods. - In rail transport, a wheel arrangement or wheel configuration is a system of classifying the way in which wheels are distributed under a locomotive. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and connections, with the adopted notations varying by country. Within a given country, different notations may also be employed for different kinds of locomotives, such as steam, electric, and diesel powered. - In Whyte notation for the classification of steam locomotives by wheel arrangement , an 0 - 4 - 4 - 2 is a locomotive that has no leading wheels , two sets of four driving wheels and two trailing wheels . - A locomotive or engine is a rail transport vehicle that provides the motive power for a train. The word originates from the Latin "loco" "from a place", ablative of "locus", "place" + Medieval Latin "motivus", "causing motion", and is a shortened form of the term "locomotive engine", first used in the early 19th century to distinguish between mobile and stationary steam engines. - A steam locomotive is a railway locomotive that produces its pulling power through a steam engine. These locomotives are fueled by burning combustible materialusually coal/coke, wood, or oilto produce steam in a boiler. The steam moves reciprocating pistons which are mechanically connected to the locomotive's main wheels (drivers). Both fuel and water supplies are carried with the locomotive, either on the locomotive itself or in wagons (tenders) pulled behind. The first steam locomotive, made by Richard Trevithick, first operated on 21 February 1804, three years after the road locomotive he made in 1801. The first practical steam locomotive was built in 1812-13 by John Blenkinsop. - Rail transport is a means of conveyance of passengers and goods on wheeled vehicles running on rails, also known as tracks. It is also commonly referred to as train transport. In contrast to road transport, where vehicles run on a prepared flat surface, rail vehicles (rolling stock) are directionally guided by the tracks on which they run. Tracks usually consist of steel rails, installed on ties (sleepers) and ballast, on which the rolling stock, usually fitted with metal wheels, moves. Other variations are also possible, such as slab track, where the rails are fastened to a concrete foundation resting on a prepared subsurface. After reading the paragraphs above, choose the best answer for the entity that related to '0-4-4-2' with the relationship of 'subclass of'. Choices: - articulated locomotive - background - boiler - case - classification - coal - concrete - country - coupling - editorial - engineer - latin - locomotive - march - material - metal - motion - notation - rail - rail transport - road - road transport - rolling stock - steam locomotive - steel - surface - system - track - turbine - type - vehicle - wood - word
Ans:
articulated locomotive