Complex sentence: Graber won the championship in gymnastics of the Maccabiah Games in 1932 and 1936 and served as the vice president of the Maccabee Organization in Warsaw.
Split into simpler sentences: Graber won the championship in gymnastics of the Maccabiah Games in 1932 and 1936. Later, he served as the vice president of the Maccabee Organization in Warsaw.