CREATE TABLE table_52558 ("Week" TEXT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Kickoff [a ]" TEXT, "Game site" TEXT, "Attendance" TEXT, "Record" TEXT)

What time was the kickoff on week 5?
SELECT "Kickoff [a ]" FROM table_52558 WHERE "Week" = '5'
SELECT "Kickoff [a ]" FROM "table_52558" WHERE "Week" = '5'