Table:
text: Chile at the Pan American Games
Summer
Summer
Year_ Edition Host_city Gold Silver Bronze Total
1951 I Buenos Aires 9 20 12 41
1955 II Mexico City 4 7 13 24
1959 III Chicago 5 2 6 13
1963 IV São Paulo 2 2 6 10
1967 V Winnipeg 1 1 3 5
1971 VI Cali 0 3 4 7
1975 VII Mexico City 0 0 2 2
1979 VIII San Juan 1 4 6 11
1983 IX Caracas 1 3 9 13
1987 X Indianapolis 1 2 4 7
1991 XI Havana 2 1 7 10
1995 XII Mar del Plata 2 6 10 18
1999 XIII Winnipeg 1 4 7 12

Question: What is the lowest VIII Edition Gold with a Silver of 4 for Chile at the Pan American Games?