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_23 ( birthdate VARCHAR, height__cm_ VARCHAR, weight__kg_ VARCHAR )

### Question ###
What is the Birthdate for the person with a height less than 191, and weight of 84 kg?

### Accurate SQL ###

SELECT birthdate FROM table_name_23 WHERE height__cm_ < 191 AND weight__kg_ = 84