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_16642_1 ( islam VARCHAR, ethnicity VARCHAR )

### Question ###
When tajik is the ethnicity what is islam?

### Accurate SQL ###

SELECT islam FROM table_16642_1 WHERE ethnicity = "Tajik"