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 table_21926985_2 ( headquarters_city VARCHAR, revenue__$billions__2012_estimate VARCHAR )

### Question ###
Where is the company with estimated revenue of 33.3 billion headquartered?

### Accurate SQL ###

SELECT headquarters_city FROM table_21926985_2 WHERE revenue__$billions__2012_estimate = "33.3"