What is Week, when Semi Finalists is Sandrine Testud Yone Kamio?
CREATE TABLE "may" (
  "week_of" text,
  "tier" text,
  "winner" text,
  "runner_up" text,
  "semi_finalists" text
);
SELECT "week_of" FROM "may" WHERE "semi_finalists"='sandrine testud yone kamio';