Table: game_results_7
Columns: week
date
kickoff
opponent
final_score
team_record
game_site
attendance

Question: what was the opposition where the field is waldstadion during time 6
SQL: SELECT "opponent" FROM game_results_7 WHERE "game_site" = 'Waldstadion' AND "week" = 6

Question: what is the location for saturday, april 21
SQL: SELECT "game_site" FROM game_results_7 WHERE "date" = 'Saturday, April 21'

Question: what was the participation for saturday, may 12
SQL: SELECT MAX("attendance") FROM game_results_7 WHERE "date" = 'Saturday, May 12'

Question: what was the achievement for the rival at scottish claymores
SQL: SELECT "team_record" FROM game_results_7 WHERE "opponent" = 'at Scottish Claymores'