Who did she play with on clay?
CREATE TABLE "mixed_doubles_8_5_titles_3_runner_ups" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);
SELECT "partner" FROM "mixed_doubles_8_5_titles_3_runner_ups" WHERE "surface"='Clay';