Input (grade 13): Berezovsky was at the height of his power in the later Yeltsin years, when he was deputy secretary of Russia's security council, a friend of Boris Yeltsin's daughter Tatyana Dyachenko, and a member of the Yeltsin inner circle, or "family".
Output (grade 8): He was deputy secretary of Russia's security council, a friend of Boris Yeltsin's daughter Tatyana.