Name the number of believers for khosrowa
CREATE TABLE "topographical_survey" (
  "name_of_village" text,
  "name_in_syriac" text,
  "number_of_believers" real,
  "number_of_priests" real,
  "number_of_churches" real
);
SELECT "number_of_believers" FROM "topographical_survey" WHERE "name_of_village"='Khosrowa';