On how many locations is there a church named Askrova Bedehuskapell, built in 1957?
CREATE TABLE "churches_in_flora" (
  "parish_prestegjeld" text,
  "sub_parish_sokn" text,
  "church_name" text,
  "year_built" text,
  "location_of_the_church" text
);
SELECT COUNT("location_of_the_church") FROM "churches_in_flora" WHERE "year_built"='1957' AND "church_name"='Askrova bedehuskapell';