For the team led by head coach Felix Magath, who is the team captain?
CREATE TABLE "personnel_and_sponsoring" (
  "team" text,
  "head_coach" text,
  "team_captain" text,
  "kitmaker" text,
  "shirt_sponsor" text
);
SELECT "team_captain" FROM "personnel_and_sponsoring" WHERE "head_coach"='felix magath';