CREATE TABLE "first_appearances_of_popular_heroes_vill" (
  "character_s" text,
  "first_appearance" text,
  "cover_date" text,
  "publisher" text,
  "estimated_value" text
);

Question: Which character first appeared in Amazing Fantasy #15?
SQL: SELECT "character_s" FROM "first_appearances_of_popular_heroes_vill" WHERE "first_appearance"='amazing fantasy #15';

Question: What is Action Comics #1's estimated value?
SQL: SELECT "estimated_value" FROM "first_appearances_of_popular_heroes_vill" WHERE "first_appearance"='action comics #1';

Question: Who publishes Wolverine?
SQL: SELECT "publisher" FROM "first_appearances_of_popular_heroes_vill" WHERE "character_s"='wolverine';