Which Nationality has a Previous team of new york knicks, and more than 3 Years of NBA experience?
CREATE TABLE "selections" (
  "player" text,
  "pos" text,
  "nationality" text,
  "team" text,
  "previous_team" text,
  "years_of_nba_experience_a" real,
  "career_with_the_franchise_b" text
);
SELECT "nationality" FROM "selections" WHERE "previous_team"='new york knicks' AND "years_of_nba_experience_a">3;