What's the name of the structure at Egypt, Arkansas?
CREATE TABLE "structures_past_or_present_between_500_a" (
  "name" text,
  "pinnacle_height" text,
  "structure_type" text,
  "main_use" text,
  "country" text,
  "town" text
);
SELECT "name" FROM "structures_past_or_present_between_500_a" WHERE "town"='egypt, arkansas';