CREATE TABLE table_5601 ("Season" TEXT, "Regionalliga S\\u00fcd" TEXT, "Regionalliga West/S\\u00fcdwest" TEXT, "Regionalliga Nord" TEXT, "Regionalliga Nord-Ost" TEXT)

Which Regionalliga West/Sudwest had a Regionalliga Nord-Ost of Carl Zeiss Jena?
SELECT "Regionalliga West/S\u00fcdwest" FROM table_5601 WHERE "Regionalliga Nord-Ost" = 'carl zeiss jena'
SELECT "Regionalliga West/S\u00fcdwest" FROM "table_5601" WHERE "Regionalliga Nord-Ost" = 'carl zeiss jena'