CREATE TABLE "round_four" (
  "pick_num" real,
  "cfl_team" text,
  "player" text,
  "position" text,
  "college" text
);

Question: How many colleges have a DB position?
SQL: SELECT COUNT("college") FROM "round_four" WHERE "position"='DB';

Question: What is the maximum number of picks for the CFL team Calgary Stampeders?
SQL: SELECT MAX("pick_num") FROM "round_four" WHERE "cfl_team"='Calgary Stampeders';

Question: How many CFL teams are from York college?
SQL: SELECT COUNT("cfl_team") FROM "round_four" WHERE "college"='York';

Question: What CFL teams are part of Simon Fraser college?
SQL: SELECT "cfl_team" FROM "round_four" WHERE "college"='Simon Fraser';

Question: Which players have a pick number of 27?
SQL: SELECT "player" FROM "round_four" WHERE "pick_num"=27;