rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 germany 17 9 14 40
how many countries did not win any gold medals ?
WRB JJ NNS VBD-AUX RB VB DT NN NNS .
7
select count ( c2 ) from w where c3_number = 0