CREATE TABLE table_48391 ("Year" FLOAT, "Tournament" CLOB, "Venue" CLOB, "Result" CLOB, "Extra" CLOB)

What is Venue, when Extra is Pentathlon?
SELECT "Venue" FROM table_48391 WHERE "Extra" = 'pentathlon'
SELECT "Venue" FROM "table_48391" WHERE "Extra" = 'pentathlon'