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_50 (first_party VARCHAR, second_member VARCHAR, second_party VARCHAR)

### Question ###
Which of the first parties has second member as  Charles Robert Colvile, and a liberal second party?

### Accurate SQL ###

SELECT first_party FROM table_name_50 WHERE second_member = "charles robert colvile" AND second_party = "liberal"