CREATE TABLE table_500 ("Season" CLOB, "Competition" CLOB, "Round" CLOB, "Club" CLOB, "1st leg" CLOB, "2nd leg" CLOB, "Aggregate" CLOB)

What is the 1st leg when club is a.c. libertas?
SELECT "1st leg" FROM table_500 WHERE "Club" = 'A.C. Libertas'
SELECT "1st leg" FROM "table_500" WHERE "Club" = 'A.C. Libertas'