CREATE TABLE "singles_titles_14" (
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);

Question: What is the tournament with a w/o score on November 5, 2007?
SQL: SELECT "tournament" FROM "singles_titles_14" WHERE "score"='w/o' AND "date"='november 5, 2007';

Question: What is the surface of eckental tournament with a w/o score?
SQL: SELECT "surface" FROM "singles_titles_14" WHERE "tournament"='eckental' AND "score"='w/o';

Question: What is the tournament with a hard surface and Ruben de Kleijn as the opponent?
SQL: SELECT "tournament" FROM "singles_titles_14" WHERE "surface"='hard' AND "opponent"='ruben de kleijn';

Question: What is the score of the tournament on November 5, 2007 with a carpet surface?
SQL: SELECT "score" FROM "singles_titles_14" WHERE "surface"='carpet' AND "date"='november 5, 2007';

Question: What is the surface of the tournament with Sascha Kloer as the opponent?
SQL: SELECT "surface" FROM "singles_titles_14" WHERE "opponent"='sascha kloer';