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_203_303 ( id number, "tribunal" text, "number of autos da fe" number, "executions in persona" number, "executions in effigie" number, "penanced" number, "total" number )

### Question ###
which spanish tribunal was the only one to not have any autos da fe during this time period ?

### Accurate SQL ###

SELECT "tribunal" FROM table_203_303 WHERE "number of autos da fe" = 0