CREATE TABLE table_20667854_1 (gics_sector VARCHAR2, free_float VARCHAR2)

What is every GICS sector for free float of 0.3180?
SELECT gics_sector FROM table_20667854_1 WHERE free_float = "0.3180"
SELECT "gics_sector" FROM "table_20667854_1" WHERE "0.3180" = "free_float"