Passage: In 1948, Bloch was offered the chair of philosophy at the University of Leipzig, and he returned to East Germany to take up the position. In 1955 he was awarded the National Prize of the GDR. In addition, he became a member of the German Academy of Sciences at Berlin (AdW). He had more or less become the political philosopher of the GDR. Among his many academic students from this period was his assistant Manfred Buhr, who earned his doctorate with him in 1957, and was later professor in Greifswald, then director of the Central Institute of Philosophy of the Academy of Sciences (ADC) in Berlin and who became a critic of Bloch.However, the Hungarian uprising in 1956 led Bloch to revise his view of the SED (Socialist Unity Party) regime, whilst retaining his Marxist orientation. Because he advocated humanistic ideas of freedom, he was obliged to retire in 1957 for political reasons – not because of his age, 72 years. A number of scientists and students spoke publicly against this forced retirement, among them the renowned professor and colleague Emil Fuchs and his students as well as Fuchs's grandson Klaus Fuchs-Kittowski.When the Berlin Wall was built in 1961, he did not return to the GDR, but went to Tübingen in West Germany, where he received an honorary chair in Philosophy. He died in Tübingen.

Question: Who was awared the national prize of the GDR in 1955?
Bloch