Detailed Instructions: You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.
Q: Context : Columbus Nova is the U.S.-based affiliate of the Renova Group of companies, one of the largest Russian strategic investors in the metallurgical, oil, machine engineering, mining, chemical, construction, housing, utilities and financial sectors.
Subject : Columbus Nova
Relation : parent company
A:
What company is Columbus Nova part of?