Information: - The 1928 Summer Olympics (Dutch: "Olympische Zomerspelen 1928"), officially known as the Games of the IX Olympiad, was an international multi-sport event which was celebrated in 1928 in Amsterdam, Netherlands. Amsterdam had bid for the 1920 and 1924 Olympic Games, but had to give way to wartorn Antwerp, Belgium, and Pierre de Coubertin's Paris, respectively. The only other candidate city for the 1928 Games was Los Angeles, which would host the Olympics four years later. - Count Carl Clarence von Rosen (May 12, 1867, Stockholm August 12, 1955) was a Swedish athlete, military officer, and Crown Equerry to the King of Sweden. He became a member of the International Olympic Committee in 1900, and was credited for the re-introduction of Equestrian at the Summer Olympics after it was dropped at the 1904 Olympic Games. He competed in many sports, such as bandy (which he introduced to Sweden), ice hockey, football, lawn tennis and ice skating. - Clarence von Rosen , Jr. ( November 10 , 1903 -- July 7 , 1933 ) was a Swedish horse rider who competed in the 1932 Summer Olympics . In 1932 he and his horse Sunnyside Maid won the bronze medal in the individual eventing . At the same Olympics he also won the bronze medal in the individual jumping competition with his horse Empire . In both events the Swedish team was not able to complete the competition with three riders , therefore he was unable to win team medals . He was the son of Clarence von Rosen . - Los Angeles (Spanish for "The Angels"), officially the City of Los Angeles and often known by its initials L.A., is the second-most populous city in the United States (after New York City), the most populous city in California and the county seat of Los Angeles County. Situated in Southern California, Los Angeles is known for its mediterranean climate, ethnic diversity, sprawling metropolis, and as a major center of the American entertainment industry. Los Angeles lies in a large coastal basin surrounded on three sides by mountains reaching up to and over . - Stockholm (or ) is the capital of Sweden and the most populous city in the Nordic countries; 932,917 people live in the municipality, approximately 1.5 million in the urban area, and 2.3 million in the metropolitan area. The city is spread across 14 islands on the coast in the southeast of Sweden at the mouth of Lake Malaren, by the Stockholm archipelago and the Baltic Sea. The area has been settled since the Stone Age, in the 6th millennium BC, and was founded as a city in 1252 by a Swedish statesman Birger Jarl. It is also the capital of Stockholm County. - Equestrianism made its Summer Olympics debut at the 1900 Summer Olympics in Paris, France. It disappeared until 1912, but has appeared at every Summer Olympic Games since. The current Olympic equestrian disciplines are Dressage, Eventing, and Jumping. In each discipline, both individual and team medals are awarded. Women and men compete together on equal terms. - The 1932 Summer Olympics, officially known as the Games of the X Olympiad, was a major worldwide multi-athletic event which was celebrated in 1932 in Los Angeles, California, United States. No other cities made a bid to host these Olympics. Held during the worldwide Great Depression, many nations and athletes were unable to pay for the trip to Los Angeles. Fewer than half the participants of the 1928 Summer Olympics in Amsterdam returned to compete in 1932. Even U.S. President Herbert Hoover skipped the event. - Herbert Clark Hoover (August 10, 1874 October 20, 1964) was an American politician who served as the 31st President of the United States from 1929 to 1933. A Republican, as Secretary of Commerce in the 1920s he introduced Progressive Era themes of efficiency in the business community and provided government support for standardization, efficiency and international trade. As president from 1929 to 1933, his ambitious programs were overwhelmed by the Great Depression, which seemed to get worse every year despite the increasingly large-scale interventions he made in the economy. He was defeated in a landslide in 1932 by Democrat Franklin D. Roosevelt, and spent the rest of his life as a conservative denouncing big government, liberalism and federal intervention in economic affairs, as Democrats repeatedly used his Depression record to attack conservatism and justify more regulation of the economy. - Count (male) or countess (female) is a title in European countries for a noble of varying status, but historically deemed to convey an approximate rank intermediate between the highest and lowest titles of nobility. The word "count" came into English from the French "comte", itself from Latin "comes"in its accusative "comitem"meaning companion, and later companion of the emperor, delegate of the emperor. The adjective form of the word is "". The British and Irish equivalent is an earl (whose wife is a "countess", for lack of an English term). Alternative names for the "count" rank in the nobility structure are used in other countries, such as "Graf" in Germany and "Hakushaku" during the Japanese Imperial era. Given the information above, choose from the list below the object entity that exhibits the relation 'occupation' with the subject 'clarence von rosen'. Choices: - candidate - count - diversity - entertainment - equestrian - major - military - nobility - noble - officer - politician - statesman
equestrian

(Question)
Information: - A mathematical problem is a problem that is amenable to being represented, analyzed, and possibly solved, with the methods of mathematics. This can be a real-world problem, such as computing the orbits of the planets in the solar system, or a problem of a more abstract nature, such as Hilbert's problems.<br> It can also be a problem referring to the nature of mathematics itself, such as Russell's Paradox. - Eben Matlis ( born 1923 ) is a mathematician known for his contributions to the theory of rings and modules , especially for his work with injective modules over commutative Noetherian rings , and his introduction of Matlis duality . Matlis earned his Ph.D. at the University of Chicago in 1958 , with Irving Kaplansky as advisor . He is now an emeritus professor at Northwestern University . - In mathematics, especially in the area of abstract algebra known as module theory, an injective module is a module "Q" that shares certain desirable properties with the Z-module Q of all rational numbers. Specifically, if "Q" is a submodule of some other module, then it is already a direct summand of that module; also, given a submodule of a module "Y", then any module homomorphism from this submodule to "Q" can be extended to a homomorphism from all of "Y" to "Q". This concept is dual to that of projective modules. Injective modules were introduced in and are discussed in some detail in the textbook . - Mathematics (from Greek "mathma", knowledge, study, learning) is the study of topics such as quantity (numbers), structure, space, and change. There is a range of views among mathematicians and philosophers as to the exact scope and definition of mathematics. - A mathematician is someone who uses an extensive knowledge of mathematics in his/her work, typically to solve mathematical problems. Given the information above, choose from the list below the object entity that exhibits the relation 'field of work' with the subject 'eben matlis'. Choices: - algebra - mathematician - mathematics - nature
(Answer)
algebra