what-all is the gold when silver is 1, event is 2000 summer paralympics and bronze is more than 3?
Event Gold Silver Bronze Total
Estonia at the Paralympics
16261503
text real real real real
2-16261503-1
Summer Paralympics
Summer Paralympics
1992 Summer Paralympics 0 2 1 3
1996 Summer Paralympics 3 4 2 9
2000 Summer Paralympics 1 1 3 5
2004 Summer Paralympics 0 1 0 1
2008 Summer Paralympics 0 0 1 1
Estonia Total 4 8 6 18
SELECT AVG Gold FROM table WHERE Silver = 1 AND Event = 2000 summer paralympics AND Bronze > 3
1 2000 summer paralympics 3