CREATE TABLE table_15507 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Series" CLOB)

who was the opponent when the attendance was larger than 54,766?
SELECT "Opponent" FROM table_15507 WHERE "Attendance" > '54,766'
SELECT "Opponent" FROM "table_15507" WHERE "Attendance" > '54,766'