Who is the Shirt Back Sponsor if the Shorts Sponsor is Telestet?
CREATE TABLE "kit_sponsors_and_manufacturers" (
  "period" text,
  "manufacturer" text,
  "shirt_main_sponsor" text,
  "shirt_back_sponsor" text,
  "shorts_sponsor" text,
  "sleeves_sponsor" text
);
SELECT "shirt_back_sponsor" FROM "kit_sponsors_and_manufacturers" WHERE "shorts_sponsor"='telestet';