He was also the tutor of the eventual Tsar Paul I of Russia and his two sons , Konstantin Pavlovich Romanov , and Tsar Alexander I of Russia .
Head entity: paul i of russia Q15189 9 10 11 12
Tail entity: alexander i of russia Q15193 24 25 26 27
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22