CREATE TABLE "official_versions" (
  "version" text,
  "length" text,
  "album" text,
  "remixed_by" text,
  "year" real
);

Question: Which Remixed by has a Version of album version, and an Album of les mots?
SQL: SELECT "remixed_by" FROM "official_versions" WHERE "version"='album version' AND "album"='les mots';

Question: How long was the instrumental version in 1986?
SQL: SELECT "length" FROM "official_versions" WHERE "year"=1986 AND "version"='instrumental';

Question: Which long version was remixed in 1986?
SQL: SELECT "remixed_by" FROM "official_versions" WHERE "year"=1986 AND "version"='long version';