Question: Ruth Williams Khama, Lady Khama, was the wife of the first President of Botswana, in office from 1966 to 1980, his name? 
Sentence (from "Seretse Khama"): Sir Seretse Goitsebeng Maphiri Khama, GCB, KBE (1 July 1921 – 13 July 1980) was the first President of Botswana, in office from 1966 to 1980.
Relevant evidence: Yes