user: Question: In which competition or tour was Nordsjælland the opponent with a HR Ground?
Columns: ['Match', 'Date', 'Competition or tour', 'Ground', 'Opponent', 'Score1']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [12.0, '28 June', 'Scandlines Invitation', 'HR', 'ZenitSt.Petersburg', '2 - 0']
SQL:

assistant: SELECT "Competition or tour" FROM "Table" WHERE "Ground" = 'HR' AND "Opponent" = 'Nordsjælland';