CREATE TABLE "nfl_draft" (
  "round" real,
  "pick" real,
  "player" text,
  "position" text,
  "college" text
);

Question: What is the sum of Round with a Position that is center?
SQL: SELECT SUM("round") FROM "nfl_draft" WHERE "position"='center';

Question: What is the sum of Round with a Pick that is 55?
SQL: SELECT SUM("round") FROM "nfl_draft" WHERE "pick"=55;