rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 south korea 9 2 1 12
which nation won the most silver medals mexico or spain ?
WDT NN VBD DT RBS JJ NNS NNP CC NNP .
Spain
select c2 from w where c2 in ( 'mexico' , 'spain' ) order by c4_number desc limit 1