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 mill ( Id VARCHAR )
TABLE: CREATE TABLE architect ( name VARCHAR, nationality VARCHAR, id VARCHAR )

### Question ###
What are the distinct names and nationalities of the architects who have ever built a mill?

### Accurate SQL ###

SELECT DISTINCT T1.name, T1.nationality FROM architect AS T1 JOIN mill AS t2 ON T1.id = T2.architect_id