CREATE TABLE table_57727 ("Year" FLOAT, "Race" TEXT, "Team" TEXT, "Pos." TEXT, "Co-driver" TEXT)

Who was the co-driver in 1970 for the race of Targa Florio?
SELECT "Co-driver" FROM table_57727 WHERE "Year" = '1970' AND "Race" = 'targa florio'
SELECT "Co-driver" FROM "table_57727" WHERE "Race" = 'targa florio' AND "Year" = '1970'