Date of 8 july 1994 involves which performer 1?
CREATE TABLE "series_6" (
  "date" text,
  "episode" real,
  "performer_1" text,
  "performer_2" text,
  "performer_3" text,
  "performer_4" text
);
SELECT "performer_1" FROM "series_6" WHERE "date"='8 july 1994';