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_90 (r_epp VARCHAR, j_thiessen VARCHAR)

### Question ###
Which of the R. Epp, has J Thiessen of Tjoatj?

### Accurate SQL ###

SELECT r_epp FROM table_name_90 WHERE j_thiessen = "tjoatj"