CREATE TABLE "mixed_doubles" (
  "tournament" text,
  "1943" text,
  "1944" text,
  "1945" text,
  "1948" text,
  "1949" text,
  "1951" text,
  "1954" text,
  "1956_1968" text,
  "1969" text,
  "career_sr" text
);

Question: What did the tournament with an A in 1956-1958, an A in 1954, and an F in 1948 get in 1969?
SQL: SELECT "1969" FROM "mixed_doubles" WHERE "1956_1968"='a' AND "1954"='a' AND "1948"='f';

Question: What did the Tournament of Australian Championships, with an A in 1969, get in 1954?
SQL: SELECT "1954" FROM "mixed_doubles" WHERE "1969"='a' AND "tournament"='australian championships';

Question: What did the Tournament of SR get in 1951?
SQL: SELECT "1951" FROM "mixed_doubles" WHERE "tournament"='sr';

Question: What did the tournament with a QF in 1969 get in 1956-1968?
SQL: SELECT "1956_1968" FROM "mixed_doubles" WHERE "1969"='qf';

Question: What did the tournament that got an A in 1945 get in 1949?
SQL: SELECT "1949" FROM "mixed_doubles" WHERE "1945"='a';