Table: copa_san_isidro_curuguaty
Columns: year
winner
runners_up
aggregate
1st_leg
2nd_leg

Question: What was the 2nd leg for 2004?
SQL: SELECT "2nd_leg" FROM copa_san_isidro_curuguaty WHERE "year" = 2004

Question: What is the 2nd leg when San Pedro was the winner?
SQL: SELECT "2nd_leg" FROM copa_san_isidro_curuguaty WHERE "winner" = 'san pedro'