Name the sepal width for i.virginica with petal length of 5.1
CREATE TABLE "fisher_s_iris_data" (
  "sepal_length" text,
  "sepal_width" text,
  "petal_length" text,
  "petal_width" text,
  "species" text
);
SELECT "sepal_width" FROM "fisher_s_iris_data" WHERE "species"='I.virginica' AND "petal_length"='5.1';