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_72 (frequency__inbound_outbound_ VARCHAR, origin VARCHAR)

### Question ###
What is the frequency of the rail with an origin of Ranchi?

### Accurate SQL ###

SELECT frequency__inbound_outbound_ FROM table_name_72 WHERE origin = "ranchi"