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 country ( country_id VARCHAR, country VARCHAR )
TABLE: CREATE TABLE city ( country_id VARCHAR )

### Question ###
How many cities are in Australia?

### Accurate SQL ###

SELECT COUNT(*) FROM city AS T1 JOIN country AS T2 ON T1.country_id = T2.country_id WHERE T2.country = 'Australia'