CREATE TABLE "constituency_151_200" (
  "constituency_no" real,
  "vidhan_sabha_constituency" text,
  "reservation_for_sc_st" text,
  "district" text,
  "lok_sabha" text
);

Question: How many reservations for sc/st are there in constituency 191?
SQL: SELECT COUNT("reservation_for_sc_st") FROM "constituency_151_200" WHERE "constituency_no"=191;