Ernest Bai Koroma (born 2 October 1953) is a Sierra Leonean  politician who served as the fourth President of Sierra Leone from 17 September 2007 to 4 April 2018.
Head entity: President of Sierra Leone
Tail entity: Ernest Bai Koroma
Relation (head \u2192 tail): position held
Inverse relation (tail \u2192 head): officeholder