CREATE TABLE "nascar_nationwide_series" (
  "year" real,
  "starts" real,
  "wins" real,
  "top_5" real,
  "top_10" real,
  "poles" real,
  "avg_start" real,
  "avg_finish" real,
  "winnings" text,
  "position" text,
  "team_s" text
);

Question: Name the average Top 5 which has a Position of 52nd with a Year smaller than 2000?
SQL: SELECT AVG("top_5") FROM "nascar_nationwide_series" WHERE "position"='52nd' AND "year"<2000;

Question: Name the average Wins  which has a Top 10 smaller than 0?
SQL: SELECT AVG("wins") FROM "nascar_nationwide_series" WHERE "top_10"<0;