What was the percentage for K. Themistokleous when I. Kasoulidis was 30.1%?
CREATE TABLE "opinion_polls" (
  "polling_firm" text,
  "date_published" text,
  "t_papadopoulos" text,
  "d_christofias" text,
  "i_kasoulidis" text,
  "k_themistokleous" text
);
SELECT "k_themistokleous" FROM "opinion_polls" WHERE "i_kasoulidis"='30.1%';