CREATE TABLE table_31703 ("Res." CLOB, "Record" CLOB, "Opponent" CLOB, "Method" CLOB, "Event" CLOB, "Round" FLOAT, "Location" CLOB)

How many rounds did the IFL: Oakland event have?
SELECT SUM("Round") FROM table_31703 WHERE "Event" = 'ifl: oakland'
SELECT SUM("Round") FROM "table_31703" WHERE "Event" = 'ifl: oakland'