In Tangier Zone, what is the PCT route availibility?
CREATE TABLE "availability_and_names" (
  "country" text,
  "type_of_protection" text,
  "maximum_term" text,
  "pct_route_available" text,
  "conversion_from_patent_application" text
);
SELECT "pct_route_available" FROM "availability_and_names" WHERE "country"='Tangier Zone';