user: Question: state the opponent on Halliwell Jones Stadium in Super League XIV
Columns: ['Competition', 'Round', 'Opponent', 'Result', 'Score', 'Home/Away', 'Venue', 'Attendance', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Friendly', 'N/A', 'Widnes Vikings', 'Loss', '26–28', 'Home', 'GPW Recruitment Stadium', 4128.0, '27/12/2008']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Venue" = 'Halliwell Jones Stadium' AND "Competition" = 'Super League XIV';