Ivan Mezhlauk
Ivan Mezhlauk was the older brother of Soviet economic planner Valery Mezhlauk , the head of Gosplan from 1934 to 1937 . Both brothers were arrested during the Great Purge of 1937-1938 and were among those who were executed . 
<triplet> Ivan Mezhlauk <subj> Valery Mezhlauk <obj> sibling <triplet> Valery Mezhlauk <subj> Ivan Mezhlauk <obj> sibling