Table schema:
CREATE TABLE table_name_42 (civil_liberties_2012 INTEGER, political_rights_2011 VARCHAR, status_2011 VARCHAR, political_rights_2012 VARCHAR)

Question: What is the average 2012 civil liberties value associated with a 2011 status of not free, political rights 2012 over 6, and political rights 2011 over 7?
SQL: SELECT AVG(civil_liberties_2012) FROM table_name_42 WHERE status_2011 = "not free" AND political_rights_2012 > 6 AND political_rights_2011 > 7