With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Zeus is Cronus's child.
text_B: Erich Wolfgang Korngold 's Piano Concerto for the Left Hand in C-sharp major , Op. 17 , was written on commission from Paul Wittgenstein in 1923 , and published in 1926 .. Erich Wolfgang Korngold. Erich Wolfgang Korngold. Paul Wittgenstein. Paul Wittgenstein. It was only the second such concerto ever written , after the Concerto in E flat by Geza Zichy , published in 1895 .. Geza Zichy. Geza Zichy. Wittgenstein , who lost an arm in World War I , was to commission works from composers such as Maurice Ravel , Richard Strauss , Sergei Prokofiev and Paul Hindemith , but Korngold was one of the first composers he approached .. Maurice Ravel. Maurice Ravel. Richard Strauss. Richard Strauss. Sergei Prokofiev. Sergei Prokofiev. Paul Hindemith. Paul Hindemith. At that time , Korngold was the most performed composer in Germany and Austria after Strauss , and , despite being only in his mid-twenties , had already written a number of operas , including his greatest triumph Die tote Stadt .. Die tote Stadt. Die tote Stadt. The Concerto for the Left Hand is cast in one continuous movement , which progresses through various moods and three main sections  :. 1 .. Massiges Zeitmass -LRB- moderate tempo -RRB-. 2 .. Heldisch -LRB- hero-like -RRB-. 3 .. Mit Feuer und Kraft -LRB- with fire and power -RRB- .. It was premiered in Vienna on 22 September 1924 with Wittgenstein as soloist and the composer conducting .. Vienna. Vienna. In many other cases , Wittgenstein required certain revisions to the works he commissioned , but not in the Korngold case .. He was so happy with what Korngold wrote that he commissioned another work , the Suite for 2 violins , cello and piano left-hand , Op. 23 .. Wittgenstein owned the exclusive performing rights to the Concerto until his death in 1961 , and it gradually slipped from the repertoire .. It was revived by Gary Graffman , who gave it its United Kingdom premiere in 1985 and it has since had a number of performances .. Gary Graffman. Gary Graffman. It has been recorded by Marc-Andre Hamelin , Howard Shelley , and Steven de Groote .. Marc-Andre Hamelin. Marc-Andre Hamelin. Howard Shelley. Howard Shelley. Steven de Groote. Steven de Groote. Most recently , Nicolas Stavy performs Korngold 's Left Hand Concerto with the Orchestre national de Lille under the direction of Paul Polivnick .
not_related.