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

Question:  what's the first appearance where character(s) is iron man
SQL: SELECT "first_appearance" FROM "first_appearances_of_popular_heroes_vill" WHERE "character_s"='Iron Man';

Question: what is the total number of publisher where cover date is may 1939
SQL: SELECT COUNT("publisher") FROM "first_appearances_of_popular_heroes_vill" WHERE "cover_date"='May 1939';

Question: what is the total number of publisher where first appearance is daredevil #1
SQL: SELECT COUNT("publisher") FROM "first_appearances_of_popular_heroes_vill" WHERE "first_appearance"='Daredevil #1';

Question:  what's the cover date where character(s) is sandman (wesley dodds)
SQL: SELECT "cover_date" FROM "first_appearances_of_popular_heroes_vill" WHERE "character_s"='Sandman (Wesley Dodds)';

Question:  what's the cover date where character(s) is x-men ; magneto
SQL: SELECT "cover_date" FROM "first_appearances_of_popular_heroes_vill" WHERE "character_s"='X-Men ; Magneto';

Question:  what's the estimated value where cover date is august 1962
SQL: SELECT "estimated_value" FROM "first_appearances_of_popular_heroes_vill" WHERE "cover_date"='August 1962';