Q: Information: - The Central Powers , consisting of Germany, , the Ottoman Empire and Bulgaria hence also known as the Quadruple Alliance was one of the two main factions during World WarI (191418). It faced and was defeated by the Allied Powers that had formed around the Triple Entente, after which it was dissolved. - Donald Swain Lewis , DSO ( 5 April 1886 -- 10 April 1916 ) was a Lieutenant Colonel in the British Army and was the second highest - ranked officer in the Royal Flying Corps / Royal Air Force to be killed in action in the First World War . His father was Ernest Lewis , one of the founding directors of the Army & Navy Stores ( United Kingdom ) . On 14 September 1914 Major Geoffrey Salmond , CO of No.3 Sqdn and Captain Donald Swain Lewis carried out a successful experiment with a Royal artillery battery using a radio transmitter to communicate the fall of artillery shells . Lewis is also credited with creating the '' grid square '' map system which revolutionized British wartime cartography . This was probably not an Ordnance Survey style grid based on a system of mile or kilometre squaring , but a system based on squares identified by letters and numbers . In the Battle of the Aisne ( September -- October 1914 ) , Lewis squared two copies of a 1:80,000 map , keeping one copy for himself for observing from the air , and giving a second copy to a battery commander with whom he was in wireless communication . On 15 September the British Third Corps assigned its RFC squadrons to support the divisional heavy & howitzer batteries . The radio - equipped aeroplanes successfully supported the artillery in taking out German positions during the offensive on the Aisne . In April 1915 Lewis was appointed to command No. 3 Squadron , operating on the Western Front . He returned to duties in Great Britain during the winter of 1915 - 16 before returning to France in February 1916 to take up command the Second Wing which was assigned to work with the Second Army in the Ypres Salient at that time . On the 10 April 1916 , flying a Morane parasol , east of Wytschaete , with Captain A. W. Gale , an officer of the Trench Mortars , as observer , he was brought down by a direct hit from the enemy 's anti-aircraft guns . Gale was wounded . Donald Swain Lewis married Margaret Agnes Maud Williams ( 1881 - 1942 ) , daughter of Philip... - The Royal Flying Corps (RFC) was the air arm of the British Army before and during the First World War, until it merged with the Royal Naval Air Service on 1 April 1918 to form the Royal Air Force. During the early part of the war, the RFC supported the British Army by artillery co-operation and photographic reconnaissance. This work gradually led RFC pilots into aerial battles with German pilots and later in the war included the strafing of enemy infantry and emplacements, the bombing of German military airfields and later the strategic bombing of German industrial and transportation facilities. - The Battle of Britain (German: "die Luftschlacht um England", literally "Air battle for England") was a combat of the Second World War, when the Royal Air Force (RAF) defended the United Kingdom (UK) against the German Air Force (Luftwaffe) attacks from the end of June 1940. It is described as the first major campaign fought entirely by air forces. The British officially recognise its duration as from 10 July until 31 October 1940 that overlaps with the period of large-scale night attacks known as the Blitz, while German historians do not accept this subdivision and regard it as a campaign lasting from July 1940 to June 1941. - The Royal Air Force (RAF) is the United Kingdom's aerial warfare force. Formed towards the end of the First World War on 1 April 1918, it is the oldest independent air force in the world. Following victory over the Central Powers in 1918 the RAF emerged as, at the time, the largest air force in the world. Since its formation, the RAF has taken a significant role in British military history, in particular, playing a large part in the Second World War where it fought its most famous campaign, the Battle of Britain. What is the relationship between 'donald swain lewis' and 'world war i'?
A: conflict

Q: Information: - Seoul () officially the Seoul Special City is the capital and largest metropolis of the Republic of Korea (commonly known as South Korea), forming the heart of the Seoul Capital Area, which includes the surrounding Incheon metropolis and Gyeonggi province, the world's 16th largest city. It is home to over half of all South Koreans along with 678,102 international residents. - Suwon (Hangul: , Hanja: ) is the capital and largest metropolis of Gyeonggi-do, South Korea's most populous province which surrounds Seoul, the national capital. Suwon lies about south of Seoul. It is traditionally known as "The City of Filial Piety". With a population close to 1.2 million, it is larger than Ulsan, although it is not governed as a metropolitan city. - Satellite City was a Welsh sitcom which started out originally as a radio show on BBC Radio Wales in 1994 and then evolved into a TV version made by BBC Wales and was first broadcast in 1996. - Seongnam is the second largest city in South Korea's Gyeonggi Province after Suwon and the 10th largest city in the country. Its population is approximately one million. Seongnam is a satellite city of Seoul. It is largely a residential city located immediately southeast of Seoul and belongs to the Seoul National Capital Area. - Seoul Subway Line 8 of the Seoul Metropolitan Rapid Transit Corporation was built 1990 - 99 and mainly serves the southeastern parts of Seoul and Seongnam . Jamsil to Amsa was opened July 1999 . Its color is rose . In 2014 construction will begin to extend the line north of the Han River through Guri Station to Byeollae Station on the Gyeongchun Line . The extension will add 11.37 km of line to the already existing 17.7 km. Construction is set to finish in 2022 . Potentially the southern end will be extended 3.9 km to Pangyo Station around 2023 . - Gyeonggi-do (Hangul: ) is the most populous province in South Korea. Its name, "Gyeonggi" means "the area surrounding capital". Thus "Gyeonggi-do" can be translated as "province surrounding Seoul". The provincial capital is Suwon. SeoulSouth Korea's largest city and national capitalis in the heart of the province but has been separately administered as a provincial-level "special city" since 1946. IncheonSouth Korea's third largest cityis on the coast of the province and has been similarly administered as a provincial-level "metropolitan city" since 1981. The three jurisdictions collectively cover 11,730km, with a combined population of 25.6 millionamounting to over half of the entire population of South Korea. - Seoul Metropolitan Rapid Transit Corporation (SMRT) was established in 1994 to operate the Seoul Subway lines 5, 6, 7, 8 in Seoul, South Korea. What is the relationship between 'seoul subway line 8' and '1996'?
A:
inception