Problem: Information:  - Coburg is a town located on the Itz river in the Upper Franconia region of Bavaria, Germany. Long part of one of the Thuringian states of the Wettin line, it joined Bavaria by popular vote only in 1920. Until the revolution of 1918, it was one of the capitals of the Duchy of Saxe-Coburg and Gotha and the Duchy of Saxe-Coburg-Saalfeld. Through successful dynastic policies, the ruling princely family married into several of the royal families of Europe, most notably in the person of Prince Albert, who married Queen Victoria in 1840. As a result of these close links with the royal houses of Europe in the late 19th and early 20th centuries, Coburg was frequently visited by the crowned heads of Europe and their families.  - Franconia (also called "Frankenland") is a region in Germany, characterised by its culture and language, and may be roughly associated with the areas in which the East Franconian dialect group, locally referred to as "fränkisch", is spoken. It commonly refers to the eastern part of the historical Franconian stem duchy, mainly represented by the modern Bavarian administrative districts of Lower, Middle, and Upper Franconia, the adjacent northeastern parts of Heilbronn-Franken in Baden-Württemberg, parts of Thuringia south of the Rennsteig ridge, and small parts of Hesse. However, there is no fixed area that is officially defined as Franconia.  - Johann Ernst of Saxe - Eisenach ( Gotha , 9 July 1566 -- Eisenach , 23 October 1638 ) , was a duke of Saxe - Eisenach and later of Saxe - Coburg . He was the fourth ( but second surviving ) and youngest son of Johann Frederick II , Duke of Saxony and Countess Palatine Elisabeth of Simmern - Sponheim . His grandfather , Johann Frederick I , had still held the title of Elector of Saxony , but after the Battle of Mühlberg he lost the title to his cousin Maurice , from the Albertine line . His father tried since then to regain the Electorate again for the Ernestine line . For this purpose he accepted an outlawed knight , Wilhelm von Grumbach , with himself , which led finally to the fact that also over his father the anger of the Emperor . Only one year after his birth was besieged the castle of his father in Gotha by troops of the Elector Augustus of Saxony and finally conquered . His father came into imperial prison from the rest of his life . His mother , Johann Ernst and his older brothers had to flee from Gotha . They found first admission with his uncle , the duke Johann Wilhelm of Saxe - Weimar , who took over also the guardianship for the princes - at the same time , he was granted by the Emperor with the lands of his brother Johann Frederick II - . After a short time in Weimar , Johann Ernst , as well as his mother and his brothers , lived in Eisenach and Eisenberg . Later , his uncle Johann Wilhelm of Saxe - Weimar lost the Imperial favour . In the Diet of Speyer ( 1570 ) , the Emperor decided to restored to the three sons of Johann Frederick II his hereditary rights . In 1572 his older brother Frederick Heinrich died from typhus fever . The same year , by the Division of Erfurt , the decision of the Diet of Speyer was made : The lands of his father were extracted again from the duchy of Saxe - Weimar , and created from them the new Duchy of Saxe - Coburg - Eisenach . Johann Ernst and his older surviving brother , Johann Casimir , were made rulers of the new country . During there minority , the lands...  - Saalfeld is a town in Germany, capital of the Saalfeld-Rudolstadt district of Thuringia. It is best known internationally as the ancestral seat of the Saxe-Coburg and Gotha branch of the Saxon House of Wettin, which was renamed the House of Windsor during their British reign in 1917.    What entity does 'john ernest' has the relation 'noble family' with?

A: house of wettin


[Q]: Information:  - Grand Prince of Kiev (sometimes Grand Duke of Kiev) was the title of the Kievan prince and the ruler of Kievan Rus' from the 10th to 13th centuries. In the 13th century, Kiev became an appanage principality first of the Grand Prince of Vladimir and the Golden Horde governors, and later was taken over by the Grand Duchy of Lithuania.  - Kievan Rus' (, ) was a loose federation of East Slavic tribes in Europe from the late 9th to the mid-13th century, under the reign of the Rurik dynasty. The modern peoples of Belarus, Ukraine, and Russia all claim Kievan Rus' as their cultural ancestors.  - Boris Vyacheslavich ( Russian :   ) was Prince of Chernigov for eight days in 1077 . He was the son of Vyacheslav Yaroslavich , Prince of Smolensk . Following his father 's death in 1057 , the child Boris was debarred from his inheritance . He died fighting against his uncles -- Vsevolod Yaroslavich , Prince of Chernigov and Izyaslav Yaroslavich , Grand Prince of Kiev -- on 3 October 1078 .  - The Prince of Smolensk was the "kniaz", the ruler or sub-ruler, of the Rus' Principality of Smolensk, a lordship based on the city of Smolensk. It passed between different groups of descendants of Grand Prince Iaroslav I of Kiev until 1125, when following the death of Vladimir Monomakh the latter's grandson Rostislav Mstislavich was installed in the principality, while the latter's father Mstislav I Vladimirovich became Grand Prince. It gained its own bishopric in 1136. It was Rostislav's descendents, the Rostaslavichi, who ruled the principality until the fifteenth-century. Smolensk enjoyed stronger western ties than most Rus' principalities.    What entity does 'boris vyacheslavich' has the relation 'noble family' with?
****
[A]:
rurik dynasty