If the country is fenghuang how many provinces are there? 
CREATE TABLE "by_county" (
  "province" text,
  "prefecture" text,
  "county" text,
  "tujia_population" real,
  "pct_of_chinas_tujia_population" text
);
SELECT COUNT("province") FROM "by_county" WHERE "county"='Fenghuang';