Question: What country did Chris Witty represent?
SQL: SELECT "Nation" FROM "2-16625915-2" WHERE "Name" = 'Chris Witty';

Question: On what day was the record set at the 2002 Salt Lake City games with a time of 3:57.70?
SQL: SELECT "Date" FROM "2-16625915-2" WHERE "Games" = '2002 Salt Lake City' AND "Time" = '3:57.70';

Question: Who set the record in the 500 metres event?
SQL: SELECT "Name" FROM "2-16625915-2" WHERE "Event" = '500 metres';