CREATE TABLE "scoring_leaders" (
  "player" text,
  "touchdowns" real,
  "extra_points" real,
  "field_goals" real,
  "points" real
);

Question: Which Extra points is the highest one that has a Player of herman everhardus, and a Field goals larger than 0?
SQL: SELECT MAX("extra_points") FROM "scoring_leaders" WHERE "player"='herman everhardus' AND "field_goals">0;

Question: Which Extra points has Points smaller than 12, and a Player of chuck bernard, and Touchdowns larger than 1?
SQL: SELECT SUM("extra_points") FROM "scoring_leaders" WHERE "points"<12 AND "player"='chuck bernard' AND "touchdowns">1;

Question: How many Field goals have Touchdowns smaller than 3, and a Player of willis ward, and an Extra points smaller than 0?
SQL: SELECT SUM("field_goals") FROM "scoring_leaders" WHERE "touchdowns"<3 AND "player"='willis ward' AND "extra_points"<0;

Question: Whicih Extra points are the average ones that have Points smaller than 6?
SQL: SELECT AVG("extra_points") FROM "scoring_leaders" WHERE "points"<6;