CREATE TABLE "counties" (
  "county" text,
  "per_capita_income" text,
  "median_household_income" text,
  "median_family_income" text,
  "population" real,
  "number_of_households" real
);

Question: What is the population for a county that has a median income of $69,760?
SQL: SELECT "population" FROM "counties" WHERE "median_household_income"='$69,760';

Question: What county has $51,456 income per capita?
SQL: SELECT "county" FROM "counties" WHERE "per_capita_income"='$51,456';