CREATE TABLE table_48643 ("Discipline" CLOB, "Circuit" CLOB, "Event" CLOB, "Session" CLOB, "Cause" CLOB)

The 1997 Japanese Formula 3 Championship is part of what circuit?
SELECT "Circuit" FROM table_48643 WHERE "Event" = '1997 japanese formula 3 championship'
SELECT "Circuit" FROM "table_48643" WHERE "Event" = '1997 japanese formula 3 championship'