Table: ladies_golf_tournament
Columns: year
dates
champion
country
score
margin_of_victory
tournament_location
purse_us
winner_s_share

Question: Which champion has sentosa golf club as the tournament location?
SQL: SELECT "champion" FROM ladies_golf_tournament 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 ladies_golf_tournament WHERE "champion" = 'jiyai shin' AND "year" < 2009

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

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