Question: What is the longest Time (seconds), when the Nation - athlete(s) is Sylke Otto - Germany?
SQL: SELECT MAX("Time (seconds)") FROM "2-15690379-3" WHERE "Nation - athlete(s)" = 'Sylke Otto - Germany';

Question: What is the Date, when the Sport is Luge - men's doubles, and when the Record is, "Start"?
SQL: SELECT "Date" FROM "2-15690379-3" WHERE "Sport" = 'Luge - men''s doubles' AND "Record" = 'Start';

Question: What is the Nation - athlete(s), when the Sport is Luge - men's singles, and when the Record is, "Track"?
SQL: SELECT "Nation - athlete(s)" FROM "2-15690379-3" WHERE "Sport" = 'Luge - men''s singles' AND "Record" = 'Track';

Question: What is the Date, when the Record is, "Track", when the Time (seconds) is longer than 43.564, and when the Sport is Luge - women's singles?
SQL: SELECT "Date" FROM "2-15690379-3" WHERE "Record" = 'Track' AND "Time (seconds)" > 43.564 AND "Sport" = 'Luge - women''s singles';