CREATE TABLE "doubles_31_16_titles_15_runner_ups" (
  "outcome" text,
  "date" real,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);

Question: Marty Riessen played as a partner during a match with what kind of surface?
SQL: SELECT "surface" FROM "doubles_31_16_titles_15_runner_ups" WHERE "partner"='marty riessen';

Question: When did Marty Riessen team up with a partner during a match on a carpet surface?
SQL: SELECT "date" FROM "doubles_31_16_titles_15_runner_ups" WHERE "surface"='carpet' AND "partner"='marty riessen';