SELECT name ,  operating_system FROM web_client_accelerator EXCEPT SELECT T1.name ,  T1.operating_system FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id  =  T1.id JOIN browser AS T3 ON T2.browser_id  =  T3.id WHERE T3.name  =  'Opera'
Show the accelerator names and supporting operating systems that are not compatible with the browser named 'Opera'.
SELECT name , operating_system FROM web_client_accelerator EXCEPT SELECT T1.name , T1.operating_system FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id = T1.id JOIN browser AS T3 ON T2.browser_id = T3.id WHERE T3.name = 'Opera '
select name , operating_system from web_client_accelerator except select t1 . name , t1 . operating_system from web_client_accelerator as t1 join accelerator_compatible_browser as t2 on t2 . accelerator_id = t1 . id join browser as t3 on t2 . browser_id = t3 . id where t3 . name = value
Show the accelerator names and supporting operating systems that are not compatible with the browser named 'Opera ' .