rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
first second
number
number
number
number
number text(text) number number number number
1 japan (jpn) 9 0 1 10
tell me the number of silver medals won by saudi arabia .
VB PRP DT NN IN NN NNS VBN IN NNP NNP .
1
select c4 from w where c2_first = 'saudi arabia'