input: Please answer the following: Information: - World WarII (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the world's nationsincluding all of the great powerseventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. In a state of "total war", the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, erasing the distinction between civilian and military resources. Marked by mass deaths of civilians, including the Holocaust (in which approximately 11 million people were killed) and the strategic bombing of industrial and population centres (in which approximately one million were killed, and which included the atomic bombings of Hiroshima and Nagasaki), it resulted in an estimated 50 million to 85 million fatalities. These made World WarII the deadliest conflict in human history. - Hiroshima is perhaps best known as the first city in history to be targeted by a nuclear weapon when the United States Army Air Forces (USAAF) dropped an atomic bomb on the city (and later on Nagasaki) at 8:15a.m. on August 6, 1945, near the end of World War II. - The Iron Cross (abbreviated EK) was a military decoration in the Kingdom of Prussia, and later in the German Empire (18711918) and Nazi Germany (19331945). It was established by King Friedrich Wilhelm III of Prussia in March 1813 backdated to the birthday of his late wife Queen Louise on 10 March 1813 during the Napoleonic Wars (EK 1813). Louise was the first person to receive this decoration (posthumous). The recommissioned Iron Cross was also awarded during the Franco-Prussian War (EK 1870), World War I (EK 1914), and World War II (EK 1939, re-introduced with a swastika added in the center). The Iron Cross was normally a military decoration only, though there were instances of it being awarded to civilians for performing military functions. Two examples of this were civilian test pilots Hanna Reitsch who was awarded the Iron Cross 2nd Class and 1st Class and Melitta Schenk Grafin von Stauffenberg, who was awarded the Iron Cross 2nd Class, for their actions as pilots during World War II. - Melitta Schenk Grafin von Stauffenberg, born Melitta Schiller (9 January 1903 8 April 1945), was a German Aviator who served as a test pilot in the Luftwaffe before and during World War II. - Nazi Germany is the common English name for the period in German history from 1933 to 1945, when Germany was governed by a dictatorship under the control of Adolf Hitler and the Nazi Party (NSDAP). Under Hitler's rule, Germany was transformed into a fascist state in which the Nazi Party took totalitarian control over nearly all aspects of life. The official name of the state was "Deutsches Reich" from 1933 to 1943 and "Grodeutsches Reich" ("Greater German Reich") from 1943 to 1945. The period is also known under the names the Third Reich and the National Socialist Period (abbreviated as "NS-Zeit"). The Nazi regime came to an end after the Allied Powers defeated Germany in May 1945, ending World War II in Europe. - Erich Walther ( 5 August 1903 -- 26 December 1947 ) was a German general of the Fallschirmjager who served during World War II. He was also a recipient of the Knight 's Cross of the Iron Cross with Oak Leaves and Swords . The Knight 's Cross of the Iron Cross and its higher grade Oak Leaves and Swords was awarded to recognise extreme battlefield bravery or successful military leadership . - Strategic bombing is a military strategy used in a total war with the goal of defeating the enemy by destroying its morale or its economic ability to produce and transport materiel to the theatres of military operations, or both. It is a systematically organized and executed attack from the air which can utilize strategic bombers, long- or medium-range missiles, or nuclear-armed fighter-bomber aircraft to attack targets deemed vital to the enemy's war-making capability. Given the information, choose the subject and object entities that have the relation of 'military branch'.
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output: erich walther , luftwaffe
input question: Information: - A board game is a tabletop game that involves counters or moved or placed on a pre-marked surface or "board", according to a set of rules. Some games are based on pure strategy, but many contain an element of chance; and some are purely chance, with no element of skill. - The Chess Olympiad is a biennial chess tournament in which teams from all over the world compete. FIDE organises the tournament and selects the host nation. - The World Team Chess Championship is an international team chess event , eligible for the participation of 10 countries whose chess federations dominate their continent . It is played every two years . In chess , this tournament and the Chess Olympiads are the most important international tournaments for teams . The strongest national teams in the world participate , and also some teams representing a continent . A full round is played by the teams , meaning that each team plays against every other team . At the first tournament , in 1985 , teams consisted of six players , since then of four players . Reserve players are permitted . From 1985 the championship was held every four years , since 2011 every two years . Since 2007 there is a separate championship for women teams , which is also held every two years . - A chessboard is the type of checkerboard used in the classic board game chess, and consists of 64 squares (eight rows and eight columns) and 32 pieces. The squares are arranged in two alternating colors (light and dark). Wooden boards may use naturally light and dark brown woods, while plastic and vinyl boards often use brown or green for the dark squares and shades such as buff or cream for the light squares. Materials vary widely; while wooden boards are generally used in high-level games; vinyl, plastic, and cardboard are common for low-level and informal play. Decorative glass and marble boards are available but rarely accepted for games rated by national or international chess federations. Each square on the board has a name from a1 to h8. - Chess is a two-player strategy board game played on a chessboard, a checkered gameboard with 64squares arranged in an eight-by-eight grid. Chess is played by millions of people worldwide, both amateurs and professionals. Given the information, choose the subject and object entities that have the relation of 'subclass of'.???
output answer:
world team chess championship , chess tournament