user: Question: What is the Romanization of the Mandarin word whose Rōmaji is ūroncha
Columns: ['Japanese', 'Rōmaji', 'Meaning', 'Chinese', 'Romanization', 'Source language']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['マージャン', 'mājan', 'mahjong', '麻將', 'májiàng', 'Mandarin']
SQL:

assistant: SELECT "Romanization" FROM "Table" WHERE "Source language" = 'Mandarin' AND "Rōmaji" = 'ūroncha';