Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE web_client_accelerator ( name VARCHAR, operating_system VARCHAR )
TABLE: CREATE TABLE browser ( id VARCHAR, name VARCHAR )
TABLE: CREATE TABLE accelerator_compatible_browser ( accelerator_id VARCHAR, browser_id VARCHAR )

### Question ###
Show the accelerator names and supporting operating systems that are not compatible with the browser named 'Opera'.

### Accurate SQL ###

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'