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_55 (sponsor_s_ VARCHAR, date_introduced VARCHAR)

### Question ###
Who sponsored the bill that was introduced on June 2, 2009?

### Accurate SQL ###

SELECT sponsor_s_ FROM table_name_55 WHERE date_introduced = "june 2, 2009"