user: Question: Who did Rhein Fire play Against where 30701 people attended?
Columns: ['Week', 'Date', 'Kickoff', 'Opponent', 'Final score', 'Team record', 'Game site', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Saturday, April 21', '7:00 p.m.', 'Amsterdam Admirals', 'W 24–20', '1–0', 'Rheinstadion', 31437.0]
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Attendance" = 30701.0;