CREATE TABLE "united_states" (
  "name" text,
  "pos" text,
  "height" text,
  "weight" text,
  "date_of_birth" text
);

Question: born on 1983-03-14, what is the cb's name?
SQL: SELECT "name" FROM "united_states" WHERE "pos"='cb' AND "date_of_birth"='1983-03-14';

Question: born on 1973-08-21, what is the cf's name?
SQL: SELECT "name" FROM "united_states" WHERE "pos"='cf' AND "date_of_birth"='1973-08-21';