What was the earliest release for Pathogen directed by Sharon Gosling?
CREATE TABLE "external_links" (
  "title" text,
  "series" text,
  "release" real,
  "featuring" text,
  "writer" text,
  "director" text,
  "length" text,
  "release_date" text
);
SELECT MIN("release") FROM "external_links" WHERE "director"='sharon gosling' AND "title"='pathogen';