user: Question: what's the regionalliga nord with regionalliga west/südwest being FC Gütersloh Rot-Weiß Essen
Columns: ['Season', 'Regionalliga Süd', 'Regionalliga West/Südwest', 'Regionalliga Nord', 'Regionalliga Nord-Ost']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1994-95', 'SpVgg Unterhaching', 'Arminia Bielefeld', 'VfB Lübeck', 'Carl Zeiss Jena']
SQL:

assistant: SELECT "Regionalliga Nord" FROM "Table" WHERE "Regionalliga West/Südwest" = 'FC Gütersloh Rot-Weiß Essen';