CREATE TABLE "mixed_doubles_6_5_titles_1_runner_up" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);

Question: What was the surface for events held in 1983?
SQL: SELECT "surface" FROM "mixed_doubles_6_5_titles_1_runner_up" WHERE "year"=1983;

Question: What was the total number of matches that had an outcome of Winner, a partner of John Lloyd, and a clay surface?
SQL: SELECT COUNT("opponents") FROM "mixed_doubles_6_5_titles_1_runner_up" WHERE "outcome"='Winner' AND "partner"='John Lloyd' AND "surface"='Clay';

Question: Who were the opponents that led to an outcome of winner on a grass surface?
SQL: SELECT "opponents" FROM "mixed_doubles_6_5_titles_1_runner_up" WHERE "outcome"='Winner' AND "surface"='Grass';