Question: What package/option has Sky Arte HD as the television service?
SQL: SELECT "Package/Option" FROM "2-15887683-7" WHERE "Television service" = 'Sky Arte HD';

Question: What language has no, as the HDTV, Sky Famiglia as the package/option, and National Geographic Channel as the television service?
SQL: SELECT "Language" FROM "2-15887683-7" WHERE "HDTV" = 'no' AND "Package/Option" = 'Sky Famiglia' AND "Television service" = 'National Geographic Channel';

Question: What language has Sky Famiglia as the package/option?
SQL: SELECT "Language" FROM "2-15887683-7" WHERE "Package/Option" = 'Sky Famiglia';

Question: What language has viaggi as the content?
SQL: SELECT "Language" FROM "2-15887683-7" WHERE "Content" = 'viaggi';

Question: What television service has Italian as the language, and Sky Famiglia as the package option?
SQL: SELECT "Television service" FROM "2-15887683-7" WHERE "Language" = 'Italian' AND "Package/Option" = 'Sky Famiglia';

Question: What package/option has documentaries as the content, yes as the HDTV, and a television service of History HD?
SQL: SELECT "Package/Option" FROM "2-15887683-7" WHERE "Content" = 'documentaries' AND "HDTV" = 'yes' AND "Television service" = 'History HD';