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_83 ( social_ao VARCHAR, external_co VARCHAR, internal_co VARCHAR )

### Question ###
What Social AO has an External CO of simonas savickas, and an Internal CO of pieter kuijsten?

### Accurate SQL ###

SELECT social_ao FROM table_name_83 WHERE external_co = "simonas savickas" AND internal_co = "pieter kuijsten"