CREATE TABLE "atlanta_falcons_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);

Question: Which college's overall number is more than 158 when Travian Robertson is the name?
SQL: SELECT "college" FROM "atlanta_falcons_draft_history" WHERE "overall">158 AND "name"='travian robertson';

Question: Which round's name is Jonathan Massaquoi?
SQL: SELECT "round" FROM "atlanta_falcons_draft_history" WHERE "name"='jonathan massaquoi';

Question: What is the mean round number for center position when the pick number is less than 23?
SQL: SELECT AVG("round") FROM "atlanta_falcons_draft_history" WHERE "position"='center' AND "pick_num"<23;