CREATE TABLE "list_of_natural_monuments" (
  "reserve" text,
  "district" text,
  "iucn" text,
  "co_management" text,
  "est" real,
  "description" text
);

Question: What is the description when the reserve is Half Moon Caye?
SQL: SELECT "description" FROM "list_of_natural_monuments" WHERE "reserve"='half moon caye';

Question: Which district has an IUCN of iii and was established in 1998?
SQL: SELECT "district" FROM "list_of_natural_monuments" WHERE "iucn"='iii' AND "est"=1998;

Question: What is the IUNC of district of Cayo and reserve of Actun Tunichil Muknal?
SQL: SELECT "iucn" FROM "list_of_natural_monuments" WHERE "district"='cayo' AND "reserve"='actun tunichil muknal';