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 china (chn) 14 10 12 36
how many combined silver medals did china , india , and japan earn ?
WRB JJ JJ NN NNS VBD-AUX NNP , NNP , CC NNP VB .
13
select sum ( c4_number ) from w where c2_first in ( 'china' , 'india' , 'japan' )