Kedụ mgbe Jeneral Sani Abacha jiri bata na ọkwa ịbụ onye isi ala Naijiria?
['site na 1993 ruo mgbe ọ nwụrụ na 1998']
When did General Sani Abacha become the President of Nigeria?
['from 1993 until his death in 1998']