user: Question: What sound has Cantonese as the language, N/A as the classification, and Spectrum DVD as the publisher?
Columns: ['Release date', 'Country', 'Classifaction', 'Publisher', 'Format', 'Region', 'Language', 'Sound', 'Subtitles']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1 September 2000', 'Kong Kong', 'N/A', 'Deltamac (HK)', 'NTSC', '3 & 6', 'Cantonese, Mandarin', 'Unknown', 'English, Traditional Chinese, Simplified Chinese']
SQL:

assistant: SELECT "Sound" FROM "Table" WHERE "Language" = 'Cantonese' AND "Classifaction" = 'N/A' AND "Publisher" = 'Spectrum DVD';