CREATE TABLE "singles_6_5_1" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);

Question: What is the Date, when the Opponent is Gisela Dulko?
SQL: SELECT "date" FROM "singles_6_5_1" WHERE "opponent"='gisela dulko';

Question: What is the Tournament, when the Opponent is Patricia Mayr-Achleitner?
SQL: SELECT "tournament" FROM "singles_6_5_1" WHERE "opponent"='patricia mayr-achleitner';