CREATE TABLE table_6247 ("Windows" CLOB, "Mac OS X" CLOB, "Linux" CLOB, "Other Unix" CLOB, "AmigaOS" CLOB, "Android" CLOB, "Windows Mobile" CLOB)

Which AmigaOS has a Windows Mobile of no, and an Android of no?
SELECT "AmigaOS" FROM table_6247 WHERE "Windows Mobile" = 'no' AND "Android" = 'no'
SELECT "AmigaOS" FROM "table_6247" WHERE "Android" = 'no' AND "Windows Mobile" = 'no'