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 people ( is_male VARCHAR, age VARCHAR )

### Question ###
How many female people are older than 30 in our record?

### Accurate SQL ###

SELECT COUNT(*) FROM people WHERE is_male = 'F' AND age > 30