CREATE TABLE table_65656 ("Game" CLOB, "Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Location/Attendance" CLOB, "Record" CLOB)

Who was the opponent when they played at the Skydome?
SELECT "Opponent" FROM table_65656 WHERE "Location/Attendance" = 'skydome'
SELECT "Opponent" FROM "table_65656" WHERE "Location/Attendance" = 'skydome'