rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 brazil 13 18 12 43
what 's the number of silver medals did chile win ?
WP VBZ DT NN IN NN NNS VBD-AUX NNP VB .
2
select c4 from w where c2 = 'chile'