original: in 1967 , he became chairman of the spd fraction in the landtag , and in 1970 minister of science and education in the cabinet of minister president heinz kühn .
simplifications: in 1967 he became chairman of the spd fraction in the landtage and in 1970 minister of science and education in the cabinet of minister president heinz kuhn . in 1967 , he became the head of the spd group in the landtag , and in 1970 he became minister of science and education in the government of minister president heinz kuhn . in 1967 , he became chairman of the spd fraction in the landtag , and in 1970 minister of science and education in the cabinet of minister president heinz kühn . in 1967 he was chairman of the spd fraction in the landtag and in 1970 he became minister of science and education in the cabinet minister of president in heinz kühn . in 1967 , he became the chairman for the splinter group , known as the social democratic party of germany , in the german representative assembly , and in 1970 he became the minister of science and eucation for the cabinet of minister-president heinz kühn . in 1967 , he became chairman of the spd fraction in the landtag , and in 1970 minister of science and education in the cabinet of minister president heinz kühn . he became chairman of spd in landtag in 1967 and in 1970 minister of science and education under minister president heinz kühn . in 1967 , he became chairman of the spd section in landtag , and in 1970 he was positioned as the minister of science and education in the cabinet of minister president heinz kuhn .