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Amazon.com lists NTSC.","unit":null,"state":"disputed","value":"NTSC","method":"printed","source":"^discogs","property":"Video system","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":null},{"key":null,"mode":null,"note":"Amazon.com gives 1.33:1.","unit":null,"state":"known","value":"4:3","method":"printed","source":"^discogs","property":"Aspect ratio","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":null},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"Colour and black & white","method":"printed","source":"^discogs","property":"Picture","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":null},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"Dolby Digital Stereo, remastered for DVD","method":"printed","source":"^discogs","property":"Audio","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":null},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"Callas Chronology & Stage Roles (text)","method":"printed","source":"^discogs","property":"Extras","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":null},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"Made in EU","method":"printed","source":"^discogs","property":"Place of manufacture","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":null},{"key":null,"mode":null,"note":"Amazon.com gives 1 hour and 30 minutes.","unit":"min","state":"disputed","value":"75:27","method":"printed","source":"^discogs","property":"Total running time","qualifier":null,"observation":"dvd-ntsc-1999","numeric_value":75}]},"licences":{"database":"ODbL-1.0","text":"CC-BY-SA-4.0","images":"See each image record"}}