Question: What year had a 100m freestyle event?
SQL: SELECT COUNT("Year Set") FROM "2-16209355-1" WHERE "Event" = '100m freestyle';

Question: What event had a Short Course in 2010?
SQL: SELECT "Event" FROM "2-16209355-1" WHERE "Long Course/Short Course" = 'Short Course' AND "Year Set" = 2010.0;

Question: What year did a short course have a time of 7:51.80?
SQL: SELECT COUNT("Year Set") FROM "2-16209355-1" WHERE "Long Course/Short Course" = 'short course' AND "Time" = '7:51.80';

Question: What was the latest year that had a 100m Freestyle?
SQL: SELECT MAX("Year Set") FROM "2-16209355-1" WHERE "Event" = '100m Freestyle';