Who is the artist for strip numbers 3932-4031a?
CREATE TABLE "table1_2161859_1" (
  "series_num" real,
  "title" text,
  "story_num" real,
  "artist" text,
  "strip_numbers" text,
  "number_of_strips" text,
  "dates_of_original_publication_of_strip" text
);
SELECT "artist" FROM "table1_2161859_1" WHERE "strip_numbers"='3932-4031A';