CREATE TABLE "round_four" (
  "pick_num" real,
  "mls_team" text,
  "player" text,
  "position" text,
  "affiliation" text
);

Question: Tell me the player from dallas burn
SQL: SELECT "player" FROM "round_four" WHERE "mls_team"='dallas burn';

Question: Tell me the sum of pick number for kenny arena
SQL: SELECT SUM("pick_num") FROM "round_four" WHERE "player"='kenny arena';