CREATE TABLE "runners_up_12" (
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score" text
);

Question: What is Date, when Surface is "Carpet"?
SQL: SELECT "date" FROM "runners_up_12" WHERE "surface"='carpet';

Question: What is Tournament, when Date is "6 October 2008"?
SQL: SELECT "tournament" FROM "runners_up_12" WHERE "date"='6 october 2008';

Question: What is Surface, when Tournament is "Sunderland , United Kingdom"?
SQL: SELECT "surface" FROM "runners_up_12" WHERE "tournament"='sunderland , united kingdom';