SELECT * FROM `db_193470_2`.`movies` WHERE VIDEOFORMAT='SD (mkv)' AND (ORIGINALTITLE LIKE '%Angelika Richter%' OR TRANSLATEDTITLE LIKE '%Angelika Richter%' OR ACTORS LIKE '%Angelika Richter%' OR DIRECTOR LIKE '%Angelika Richter%' OR PRODUCER LIKE '%Angelika Richter%') ORDER BY SOURCE DESC, NUM DESC LIMIT -50,50

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