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 FACULTY (Rank VARCHAR)

### Question ###
Find the rank of the faculty that the fewest faculties belong to.

### Accurate SQL ###

SELECT Rank FROM FACULTY GROUP BY Rank ORDER BY COUNT(*) LIMIT 1