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_29785324_4 ( reservation_for_sc_st VARCHAR, constituency_no VARCHAR )

### Question ###
How many reservations for sc/st are there in constituency 191?

### Accurate SQL ###

SELECT COUNT(reservation_for_sc_st) FROM table_29785324_4 WHERE constituency_no = 191