user: Question: If the world record is the African record, what is the 1:53.28 total number?
Columns: ['World record', 'Jarmila Kratochvílová ( TCH )', '1:53.28', 'Munich , West Germany', '26 July 1983']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Championship record', 'Jarmila Kratochvílová ( TCH )', '1:54.68', 'Helsinki , Finland', '9 August 1983']
SQL:

assistant: SELECT COUNT("1:53.28") FROM "Table" WHERE "World record" = 'African record';