user: Question:  how many president with date of inauguration being 4June1979
Columns: ['#', 'President', 'Date of birth', 'Date of inauguration', 'Age at inauguration', 'End of term', 'Length of retirement', 'Date of death', 'Lifespan']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Nkrumrah, Kwame Kwame Nkrumah', '1909-09-21 21 September 1909', '1July1960', '50-284 50years, 284days', '24February1966', '2,254 days', '1972-04-27 27 April 1972', 'days (62years, 219days)']
SQL:

assistant: SELECT COUNT("President") FROM "Table" WHERE "Date of inauguration" = '4June1979';