What 10:00 has party of five as 9:30?
CREATE TABLE "wednesday" (
  "7_00" text,
  "7_30" text,
  "8_00" text,
  "8_30" text,
  "9_00" text,
  "9_30" text,
  "10_00" text,
  "10_30" text
);
SELECT "10_00" FROM "wednesday" WHERE "9_30"='party of five';