CREATE TABLE "1968" (
  "date" text,
  "city" text,
  "opponent" text,
  "results" text,
  "type_of_game" text
);

Question: What day was a friendly game held that had a score of 2:3?
SQL: SELECT "date" FROM "1968" WHERE "type_of_game"='friendly' AND "results"='2:3';

Question: What type of game was held on December 22?
SQL: SELECT "type_of_game" FROM "1968" WHERE "date"='december 22';