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_89 ( polling_firm VARCHAR, green VARCHAR, date_of_polling VARCHAR )

### Question ###
What june 21 22, 2011 polling has green smaller than 13?

### Accurate SQL ###

SELECT polling_firm FROM table_name_89 WHERE green < 13 AND date_of_polling = "june 21–22, 2011"