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 nations had a gold medal but no silver medals ?
WDT NNS VBD-AUX DT NN NN CC DT NN NNS .
West Germany|Netherlands
select c2 from w where c3_number = 1 and c4_number = 0