Which IPv6 address had a location of distributed using anycast 8/0 and a letter of A?
CREATE TABLE "root_server_addresses" (
  "letter" text,
  "i_pv6_address" text,
  "as_number" text,
  "operator" text,
  "location_numsites_global_local" text,
  "software" text
);
SELECT "i_pv6_address" FROM "root_server_addresses" WHERE "location_numsites_global_local"='distributed using anycast 8/0' AND "letter"='a';