Table: pga_championship_2007
Columns: player
country
year_s_won
total
to_par

Question: What years won when the To par is more than 13?
SQL: SELECT "year_s_won" FROM pga_championship_2007 WHERE "to_par" > 13

Question: What is the highest Total for Australia?
SQL: SELECT MAX("total") FROM pga_championship_2007 WHERE "country" = 'australia'

Question: What is the average Total for the United States with a To par more than 6 and 1996 was won?
SQL: SELECT AVG("total") FROM pga_championship_2007 WHERE "country" = 'united states' AND "to_par" > 6 AND "year_s_won" = '1996'