Table: football_games_6
Columns: week
date
kickoff
opponent
final_score
team_record
game_site
attendance

Question: How many times did the Centurions play the Rhein Fire?
SQL: SELECT COUNT("game_site") FROM football_games_6 WHERE "opponent" = 'Rhein Fire'

Question: Where did the Centurions play the Hamburg Sea Devils?
SQL: SELECT "game_site" FROM football_games_6 WHERE "opponent" = 'Hamburg Sea Devils'

Question: What time was the kickoff against the Frankfurt Galaxy?
SQL: SELECT "kickoff" FROM football_games_6 WHERE "opponent" = 'Frankfurt Galaxy'