What's the melamine content of 英雄牌嬰幼兒配方乳粉 having more than 1 samples failed?
CREATE TABLE "tests_conducted_by_aqsiq" (
  "producer" text,
  "product" text,
  "samples_taken" real,
  "samples_failed" real,
  "melamine_content_mg_kg" real
);
SELECT "melamine_content_mg_kg" FROM "tests_conducted_by_aqsiq" WHERE "samples_failed">1 AND "product"='英雄牌嬰幼兒配方乳粉';