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_51 (tns_sofres_6_2_09 VARCHAR, ipsos_6_3_09 VARCHAR)

### Question ###
What's the TNS-Sofres when Ipsos was 27%?

### Accurate SQL ###

SELECT tns_sofres_6_2_09 FROM table_name_51 WHERE ipsos_6_3_09 = "27%"