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_name_81 ( cores VARCHAR, socket VARCHAR, release_date VARCHAR )

### Question ###
What the cores with a release date of February 2011 and a BGA-1023 socket?

### Accurate SQL ###

SELECT cores FROM table_name_81 WHERE socket = "bga-1023" AND release_date = "february 2011"