Detailed Instructions: In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Problem:Context: Amiens is a city and commune in northern France, north of Paris and south-west of Lille. It is the capital of the Somme department in Hauts-de-France. The city had a population of 136,105 according to the 2006 census., Cambrai (; old spelling "Cambray") is a commune in the Nord department and in the Hauts-de-France region of France on the Scheldt river, which is known locally as the Escaut river., The unification of Germany into a politically and administratively integrated nation state officially occurred on 18 January 1871 in the Hall of Mirrors at the Palace of Versailles in France. Princes of the German states gathered there to proclaim Wilhelm I of Prussia as German Emperor after the French capitulation in the Franco-Prussian War. Unofficially, the "de facto" transition of most of the German-speaking populations into a federated organization of states had been developing for some time through alliances formal and informal between princely rulersbut in fits and starts; self-interests of the various parties hampered the process over nearly a century of autocratic experimentation, beginning in the era of the Napoleonic Wars, which saw the dissolution of the Holy Roman Empire (1806), and the subsequent rise of German nationalism., A republic (from ) is a sovereign state, country, or government which is organized with a form of government in which power resides in elected individuals representing the citizen body and government leaders exercise power according to the rule of law. In modern times, the definition of a republic commonly refers to a government which excludes a monarch. Currently, 147 of the world's 206 sovereign states use the word "republic" as part of their official names; not all of these are republics in the sense of having elected governments, nor do all nations with elected governments use the word "republic" in their names., France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans and had a total population of almost 67 million people as of January 2017. It is a unitary semi-presidential republic with the capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux., The Hindenburg Line (or Siegfried Position) was a German defensive position of World War I, built during the winter of 19161917 on the Western Front, from Arras to Laffaux, near Soissons on the Aisne. In 1916, the German offensive at the Battle of Verdun had been a costly failure. The Anglo-French offensive at the Battle of the Somme had forced a defensive battle on the Germans, leaving the western armies ("Westheer") exhausted. On the Eastern Front, the Brusilov Offensive had inflicted huge losses on the Austro-Hungarian armies in Russia and forced the Germans to take over more of the front. The declaration of war by Romania had placed additional strain on the German army and war economy. Construction of the Hindenburg Line in France was begun by the Germans in September 1916, to make a retirement from the Somme front possible, to counter an anticipated increase in the power of Anglo-French attacks in 1917., The Hundred Days Offensive was the final period of the First World War, during which the Allies launched a series of offensives against the Central Powers on the Western Front from 8 August to 11 November 1918, beginning with the Battle of Amiens. The offensive essentially pushed the Germans out of France, forcing them to retreat beyond the Hindenburg Line, and was followed by an armistice. The term "Hundred Days Offensive" does not refer to a specific battle or unified strategy, but rather the rapid series of Allied victories starting with the Battle of Amiens., The Scheldt (, ) is a long river in northern France, western Belgium and the southwestern part of the Netherlands. Its name is derived from an adjective corresponding to Old English "sceald" "shallow", Modern English "shoal", Low German "schol", Frisian "skol", and Swedish (obsolete) "skäll" "thin"., The Battle of Cambrai , 1918 ( also known as the Second Battle of Cambrai ) was a battle between troops of the British First , Third and Fourth Armies and German Empire forces during the Hundred Days Offensive of the First World War . The battle took place in and around the French city of Cambrai , between 8 and 10 October 1918 . The battle incorporated many of the newer tactics of 1918 , in particular tanks , meaning that the attack was an overwhelming success with light casualties in an extremely short amount of time ., Weimar Republic is an unofficial, historical designation for the German state between 1919 and 1933. The name derives from the city of Weimar, where its constitutional assembly first took place. The official name of the state was still "Deutsches Reich"; it had remained unchanged since 1871. In English the country was usually known simply as Germany.
A national assembly was convened in Weimar, where a new constitution for the "Deutsches Reich" was written, and adopted on 11 August 1919. In its fourteen years, the Weimar Republic faced numerous problems, including hyperinflation, political extremism (with paramilitaries  both left- and right-wing); and contentious relationships with the victors of the First World War. The people of Germany blamed the Weimar Republic rather than their wartime leaders for the country's defeat and for the humiliating terms of the Treaty of Versailles. However, the Weimar Republic government successfully reformed the currency, unified tax policies, and organized the railway system. Weimar Germany eliminated most of the requirements of the Treaty of Versailles; it never completely met its disarmament requirements, and eventually paid only a small portion of the war reparations (by twice restructuring its debt through the Dawes Plan and the Young Plan). Under the Locarno Treaties, Germany accepted the western borders of the republic, but continued to dispute the Eastern border., A nation state is a type of state that joins the political entity of a state to the cultural entity of a nation, from which it aims to derive its political legitimacy to rule and potentially its status as a sovereign state.
A state is specifically a political and geopolitical entity, whilst a nation is a cultural and ethnic one. The term "nation state" implies that the two coincide, in that a state has chosen to adopt and endorse a specific cultural group as associated with it., 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 War I (191418). It faced and was defeated by the Allied Powers that had formed around the Triple Entente, after which it was dissolved., The German Empire (officially ') was the historical German nation state that existed from the unification of Germany in 1871 to the abdication of Kaiser Wilhelm II in November 1918, when Germany became a federal republic (the Weimar Republic)., Subject: battle of cambrai , Relation: part_of, Options: (A) august (B) battle of the somme (C) brusilov offensive (D) city (E) constitution (F) country (G) economy (H) empire (I) english (J) english channel (K) era (L) europe (M) france (N) french (O) german (P) german empire (Q) government (R) holy roman empire (S) hundred days (T) january (U) law (V) mediterranean sea (W) name (X) national assembly (Y) north sea (Z) november ([) ocean (\) old english (]) palace of versailles (^) paris (_) part (`) population (a) river (b) series (c) state (d) system (e) the republic (f) war (g) world war i
Solution:
world war i