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_97 (source VARCHAR, moving_from VARCHAR)

### Question ###
What is the source of the move from Port Vale?

### Accurate SQL ###

SELECT source FROM table_name_97 WHERE moving_from = "port vale"