CREATE TABLE "winners" (
  "year" real,
  "dates" text,
  "champion" text,
  "country" text,
  "score" text,
  "margin_of_victory" text,
  "tournament_location" text,
  "purse_us" real,
  "winner_s_share" real
);

Question: Which champion has sentosa golf club as the tournament location?
SQL: SELECT "champion" FROM "winners" WHERE "tournament_location"='sentosa golf club';

Question: What is the highest winner's share that has jiyai shin as the championship with a year prior to 2009?
SQL: SELECT MAX("winner_s_share") FROM "winners" WHERE "champion"='jiyai shin' AND "year"<2009;

Question: Which county has 2011 as the year?
SQL: SELECT "country" FROM "winners" WHERE "year"=2011;

Question: How many winner's shares have ai miyazato as the champion?
SQL: SELECT SUM("winner_s_share") FROM "winners" WHERE "champion"='ai miyazato';