CREATE TABLE table_69809 ("Year" CLOB, "Men's singles" CLOB, "Men's doubles" CLOB, "Women's doubles" CLOB, "Mixed doubles" CLOB)

Which Men's singles has a Mixed doubles of kai abraham petra michalowsky?
SELECT "Men's singles" FROM table_69809 WHERE "Mixed doubles" = 'kai abraham petra michalowsky'
SELECT "Men's singles" FROM "table_69809" WHERE "Mixed doubles" = 'kai abraham petra michalowsky'